GSM - Global System for Mobile Communications (2G)
What is GSM?
GSM (Global System for Mobile Communications) is a standard developed to describe protocols for second-generation (2G) digital cellular networks. It enables voice calls, SMS, and limited data services using circuit-switched technology.
GSM defines how mobile phones communicate with base stations and the core network using a layered protocol stack.
Why is GSM useful?
GSM revolutionized mobile communication by offering: * Global interoperability – Used in over 200 countries. * Secure voice and text – With built-in encryption and authentication. * Efficient spectrum use – Through TDMA and frequency reuse. * Roaming support – Seamless service across networks and countries. * Foundation for 2G/3G/4G evolution – GSM laid the groundwork for modern mobile networks.
How it works?
Mobile Registration – The phone connects to the nearest base station and authenticates with the network.
Call Setup – The MSC (Mobile Switching Center) routes the call using signaling protocols.
Voice/Data Transmission – Voice is digitized, encrypted, and transmitted over the air.
Call Termination – The session ends and resources are released.
Where is GSM used?
2G mobile networks – For voice and SMS.
M2M/IoT devices – In low-bandwidth applications.
Fallback for newer networks – When 3G/4G/5G is unavailable.
Rural and legacy systems – Where modern infrastructure is limited.
Which OSI layer does GSM belong to?
GSM spans multiple OSI layers, but its core signaling and control functions are implemented at Layer 2 and Layer 3. Here’s why: * Layer 2 (Data Link Layer): GSM uses LAPDm (Link Access Protocol on the Dm channel) for reliable communication between the mobile and BTS. * Layer 3 (Network Layer): GSM signaling protocols like RR (Radio Resource), MM (Mobility Management), and CM (Call Control) operate here to manage sessions, mobility,and call setup. * Layer 1 (Physical Layer): Handles radio transmission using TDMA and frequency hopping.
Topics in this section,
In this section, you are going to learn
Terminology
Version Info
GSM Version |
GSM Number |
Year |
Core Idea / Contribution |
|---|---|---|---|
Phase 1 |
GSM 01.xx series |
1991 |
Basic voice services, SMS, and circuit-switched data. |
Phase 2 |
GSM 02.xx, 03.xx series |
1995 |
Added supplementary services (call forwarding, barring), improved data rates. |
Phase 2+ |
GSM 04.xx, 05.xx series |
19971999 |
Introduced GPRS, EDGE, and enhanced SIM capabilities. |
Release 99 |
TS 23.003, TS 24.008 |
1999 |
Unified GSM and UMTS core network architecture; foundation for 3G evolution. |
Release 4 |
TS 23.002, TS 23.038 |
2001 |
Introduced MSC Server architecture and IP-based transport. |
Release 5 |
TS 23.060, TS 23.040 |
2002 |
Added support for IMS and packet-switched voice (foundation for VoIP over GSM). |
Release 6+ |
TS 23.272, TS 23.401 |
2004+ |
Continued enhancements for interworking with 3G/4G, improved data services, and security. |
Setup
Setup
RR (Radio Resource) Setup Packet
S.No |
Protocol Packets |
Description |
Size(Bytes) |
|---|---|---|---|
1 |
RR (Radio Resource) Setup |
Establishes a dedicated channel between MS and BTS. |
~50100 |
Channel Request |
Sent by MS to request a signaling channel. |
~2030 |
|
Immediate Assignment |
BTS assigns a channel to the MS. |
~3050 |
MM (Mobility Management) Packet
S.No |
Protocol Packets |
Description |
Size(Bytes) |
|---|---|---|---|
2 |
MM (Mobility Management) |
Handles location updates, authentication, and TMSI allocation. |
~60120 |
Location Update Request |
Sent by MS when entering a new location area. |
~4060 |
|
Authentication Request/Response |
Used to verify the identity of the subscriber. |
~2040 |
CM (Call Control) Packet
S.No |
Protocol Packets |
Description |
Size(Bytes) |
|---|---|---|---|
3 |
CM (Call Control) |
Manages call setup, modification, and release. |
~80150 |
Setup |
Initiates a call from the MS. |
~4060 |
|
Call Confirm/Alerting |
Indicates call progress to the MS. |
~3050 |
|
Disconnect/Release |
Terminates the call session. |
~3040 |
SMS Packet(CP-DATA)
S.No |
Protocol Packets |
Description |
Size(Bytes) |
|---|---|---|---|
4 |
SMS Packet (CP-DATA) |
Transports short messages between MS and SMSC. |
~140176 |
SMS Submit/Deliver |
Contains the actual message content. |
~140 (max payload) |
LAPDm Frame Packet
S.No |
Protocol Packets |
Description |
Size(Bytes) |
|---|---|---|---|
5 |
LAPDm Frame |
Data link layer frame for reliable transmission over the air interface. |
~23184 |
UI Frame |
Unnumbered Information frame for signaling. |
~2350 |
|
I Frame |
Information frame for user data. |
~50184 |
S.no |
Use Case |
Description |
|---|---|---|
1 |
Voice Calls |
Enables circuit-switched voice communication between mobile users. |
2 |
SMS (Short Message Service) |
Allows sending and receiving of short text messages (up to 160 characters). |
3 |
Mobile Roaming |
Supports international roaming by allowing users to access services abroad. |
4 |
GPRS/EDGE Data Services |
Provides packet-switched data for internet access and multimedia messaging. |
5 |
Caller ID and Call Forwarding |
Offers supplementary services like call waiting, barring, and redirection. |
6 |
Emergency Calling (112/911) |
Enables access to emergency services even without a SIM card. |
7 |
SIM-Based Authentication |
Uses SIM cards for secure user identification and network access. |
8 |
M2M and IoT Connectivity |
Used in low-bandwidth IoT applications like smart meters and vehicle tracking. |
9 |
Mobile Banking & Payments |
Supports USSD and SMS-based financial services in developing regions. |
10 |
Fallback for Modern Networks |
Acts as a backup when 3G/4G/5G coverage is unavailable. |
S.no |
Feature |
Description |
|---|---|---|
1 |
Digital Voice Transmission |
Converts analog voice to digital signals for clearer and more efficient calls. |
2 |
SIM-Based Authentication |
Uses SIM cards to securely identify and authenticate users. |
3 |
International Roaming |
Allows users to access mobile services across different countries and networks. |
4 |
SMS Support |
Enables sending and receiving short text messages. |
5 |
Call and Message Encryption |
Provides basic encryption for voice and SMS to protect user privacy. |
6 |
Supplementary Services |
Includes call forwarding, call waiting, caller ID, and barring services. |
7 |
Efficient Spectrum Usage |
Uses TDMA and frequency reuse to maximize network capacity. |
8 |
Low Power Consumption |
Optimized for longer battery life in mobile devices. |
9 |
Emergency Calling |
Supports emergency calls even without a SIM card or network registration. |
10 |
Support for Data Services |
Offers GPRS and EDGE for basic internet and multimedia messaging. |
Digital Voice Transmission - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
Voice Input Sampling |
Capture analog voice input |
Signal is sampled correctly |
2 |
A/D Conversion |
Convert analog signal to digital |
Digital signal is generated |
3 |
Use of 13 kbps Codec |
Encode voice using GSM Full Rate codec |
Voice is compressed to 13 kbps |
4 |
Use of Half Rate Codec |
Encode voice using GSM Half Rate codec |
Voice is compressed to 5.6 kbps |
5 |
Use of Enhanced Full Rate Codec |
Encode voice using EFR codec |
Improved voice quality |
6 |
Voice Frame Generation |
Generate 20 ms voice frames |
Frames are correctly formed |
7 |
Frame Interleaving |
Interleave voice frames |
Frames are spread across time slots |
8 |
Voice Frame Transmission |
Transmit voice frames over air interface |
Frames are sent without loss |
9 |
Frame De-interleaving |
Reconstruct original frame order |
Voice is intelligible |
10 |
D/A Conversion |
Convert digital signal back to analog |
Audio is played clearly |
11 |
Voice Quality Test |
Measure MOS (Mean Opinion Score) |
Score is acceptable (>3.5) |
12 |
Background Noise Suppression |
Suppress ambient noise during call |
Voice is clearer |
13 |
Echo Cancellation |
Remove echo from voice signal |
Echo is not heard |
14 |
Voice Activity Detection |
Detect when user is speaking |
Silence is not transmitted |
15 |
Comfort Noise Generation |
Generate background noise during silence |
Natural call experience |
16 |
Bit Error Resilience |
Handle bit errors in transmission |
Voice remains intelligible |
17 |
Use of TCH/F Channel |
Use full-rate traffic channel |
Voice is transmitted |
18 |
Use of TCH/H Channel |
Use half-rate traffic channel |
Voice is transmitted |
19 |
Handover During Call |
Maintain call during cell change |
No voice dropouts |
20 |
Voice Delay Measurement |
Measure end-to-end delay |
Delay < 150 ms |
21 |
Voice Clarity in Urban Area |
Test call in high-interference area |
Voice remains clear |
22 |
Voice Clarity in Rural Area |
Test call in low-signal area |
Voice is acceptable |
23 |
Voice Clarity in Moving Vehicle |
Test call while driving |
Voice is stable |
24 |
Voice Clarity in Elevator |
Test call in enclosed metal space |
Voice is intelligible |
25 |
Voice Clarity in Tunnel |
Test call in tunnel |
Voice is maintained |
26 |
Codec Negotiation |
Switch between codecs based on network |
Best codec is selected |
27 |
Call Setup Time |
Measure time to establish voice call |
Setup < 5 seconds |
28 |
Call Drop Rate |
Measure frequency of dropped calls |
Drop rate < 2% |
29 |
Call Retainability |
Maintain call for long duration |
No unexpected drops |
30 |
Call Accessibility |
Ability to initiate call |
Call connects successfully |
31 |
Voice Encryption |
Encrypt voice data |
Data is secure |
32 |
Voice Decryption |
Decrypt voice data |
Audio is intelligible |
33 |
Voice Compression Efficiency |
Measure compression ratio |
Efficient compression |
34 |
Voice Packet Loss Recovery |
Handle lost voice packets |
Minimal impact on quality |
35 |
Voice Latency in Roaming |
Measure delay during international call |
Delay is acceptable |
36 |
Voice Quality in 2G Network |
Test voice on GSM-only network |
Quality is acceptable |
37 |
Voice Quality in 3G/4G Fallback |
Test GSM fallback from higher networks |
Voice remains stable |
38 |
Voice Quality with Weak Signal |
Test call at cell edge |
Voice is still intelligible |
39 |
Voice Quality with Interference |
Introduce RF interference |
Voice is resilient |
40 |
Voice Quality with Multipath |
Simulate multipath fading |
Voice is clear |
41 |
Voice Quality with Jitter |
Introduce jitter in transmission |
Voice is smooth |
42 |
Voice Quality with Delay Spread |
Simulate delay spread |
Voice is understandable |
43 |
Voice Quality with Codec Switching |
Switch codecs mid-call |
No noticeable degradation |
44 |
Voice Quality with Congestion |
Simulate network congestion |
Voice is prioritized |
45 |
Voice Quality with Power Saving Mode |
Enable DTX (Discontinuous Transmission) |
Battery is saved, voice is unaffected |
46 |
Voice Quality with Handover |
Perform intra-BSC handover |
Voice is uninterrupted |
47 |
Voice Quality with Inter-BSC Handover |
Perform inter-BSC handover |
Voice is uninterrupted |
48 |
Voice Quality with Inter-MSC Handover |
Perform inter-MSC handover |
Voice is uninterrupted |
49 |
Voice Quality with Codec Mismatch |
Use different codecs at each end |
Transcoding is successful |
50 |
Voice Quality with Encryption Enabled |
Enable A5/1 or A5/3 encryption |
Voice is secure and clear |
SIM-Based Authentication - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
SIM Insertion Detection |
Insert SIM into device |
SIM is detected |
2 |
SIM Removal Detection |
Remove SIM from device |
Device shows SIM removed |
3 |
IMSI Retrieval |
Read IMSI from SIM |
IMSI is retrieved correctly |
4 |
Authentication Request Generation |
Network sends RAND challenge |
SIM receives challenge |
5 |
Authentication Response Generation |
SIM computes SRES using Ki and RAND |
SRES is generated correctly |
6 |
Authentication Response Verification |
Network compares received SRES |
Match confirms authentication |
7 |
Ki Confidentiality |
Ensure Ki is not transmitted over air |
Ki remains secure |
8 |
TMSI Assignment |
Assign temporary identity after authentication |
TMSI is used instead of IMSI |
9 |
SIM Lock Activation |
Enable SIM PIN |
Device prompts for PIN |
10 |
SIM Lock Verification |
Enter correct SIM PIN |
Access granted |
11 |
SIM Lock Failure |
Enter incorrect SIM PIN |
Access denied |
12 |
SIM PUK Unlock |
Unlock SIM with PUK after PIN failures |
SIM is unlocked |
13 |
SIM Authentication Retry Limit |
Exceed PIN retry limit |
SIM is blocked |
14 |
SIM Authentication Timeout |
Delay response from SIM |
Authentication fails |
15 |
SIM Authentication in Roaming |
Authenticate on visited network |
Authentication succeeds |
16 |
SIM Authentication on 2G |
Authenticate on GSM network |
Authentication succeeds |
17 |
SIM Authentication on 3G |
Authenticate on UMTS network |
Authentication succeeds |
18 |
SIM Authentication on 4G |
Authenticate on LTE network |
Authentication succeeds |
19 |
SIM Authentication on 5G |
Authenticate on 5G NSA/SA network |
Authentication succeeds |
20 |
SIM Toolkit Access |
Access SIM Toolkit menu |
Menu is displayed |
21 |
SIM File System Access |
Read EF files from SIM |
Files are accessible |
22 |
SIM Profile Validation |
Check SIM profile against network |
Profile is valid |
23 |
SIM Card Type Detection |
Detect 2G/3G/4G/5G SIM |
Type is correctly identified |
24 |
SIM Card Size Compatibility |
Use nano/micro/standard SIM |
Device accepts SIM |
25 |
SIM Swap Detection |
Detect change in SIM |
Network triggers re-authentication |
26 |
SIM Cloning Attempt |
Use cloned SIM |
Authentication fails |
27 |
SIM Authentication Logging |
Log authentication events |
Logs are accurate |
28 |
SIM Authentication Encryption |
Encrypt authentication messages |
Messages are secure |
29 |
SIM Authentication with A3 Algorithm |
Use A3 algorithm for SRES |
Response is valid |
30 |
SIM Authentication with A8 Algorithm |
Use A8 algorithm for Kc |
Cipher key is generated |
31 |
SIM Authentication with MILENAGE |
Use MILENAGE algorithm (3G/4G) |
Authentication succeeds |
32 |
SIM Authentication with XOR |
Use XOR algorithm (fallback) |
Authentication succeeds |
33 |
SIM Authentication Failure Handling |
Handle failed authentication |
Retry or deny access |
34 |
SIM Authentication Retry Mechanism |
Retry after failed attempt |
Authentication succeeds |
35 |
SIM Authentication in Dual SIM Device |
Authenticate both SIMs |
Both are authenticated independently |
36 |
SIM Authentication in eSIM |
Authenticate embedded SIM |
Authentication succeeds |
37 |
SIM Authentication in M2M Device |
Authenticate SIM in IoT module |
Authentication succeeds |
38 |
SIM Authentication in VoLTE |
Authenticate for voice over LTE |
Authentication succeeds |
39 |
SIM Authentication in VoWiFi |
Authenticate for Wi-Fi calling |
Authentication succeeds |
40 |
SIM Authentication in IMS |
Authenticate for IP Multimedia Subsystem |
Authentication succeeds |
41 |
SIM Authentication in Emergency Call |
Attempt emergency call without SIM |
Limited access granted |
42 |
SIM Authentication in Airplane Mode |
Attempt authentication in airplane mode |
Authentication blocked |
43 |
SIM Authentication in Weak Signal |
Authenticate with low signal strength |
Authentication may retry |
44 |
SIM Authentication in High Load |
Authenticate during network congestion |
Authentication may delay |
45 |
SIM Authentication in Handover |
Maintain authentication during cell change |
Session remains valid |
46 |
SIM Authentication in Power Cycle |
Re-authenticate after reboot |
Authentication succeeds |
47 |
SIM Authentication in Network Switch |
Switch between 2G/3G/4G |
Authentication re-established |
48 |
SIM Authentication in IMSI Catcher |
Attempt authentication with rogue base station |
Authentication fails or alerts triggered |
49 |
SIM Authentication with OTA Update |
Authenticate after SIM OTA update |
Authentication succeeds |
50 |
SIM Authentication with Multi-IMSI |
Authenticate using alternate IMSI |
Authentication succeeds |
International Roaming - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
Roaming SIM Detection |
Insert SIM in foreign country |
Network is detected |
2 |
Automatic Network Selection |
Enable auto network selection |
Device registers to preferred roaming partner |
3 |
Manual Network Selection |
Manually select available network |
Device connects if allowed |
4 |
IMSI Retrieval in Roaming |
Retrieve IMSI from SIM |
IMSI is read correctly |
5 |
Authentication with Visited Network |
Authenticate with foreign network |
Authentication succeeds |
6 |
Location Update in Roaming |
Perform location update |
Update is accepted |
7 |
TMSI Assignment in Roaming |
Assign temporary ID in visited network |
TMSI is used |
8 |
Call Setup in Roaming |
Make outgoing call |
Call connects successfully |
9 |
Call Reception in Roaming |
Receive incoming call |
Call is received |
10 |
SMS Sending in Roaming |
Send SMS from visited network |
SMS is delivered |
11 |
SMS Receiving in Roaming |
Receive SMS while roaming |
SMS is received |
12 |
Data Session in Roaming |
Start mobile data session |
Data is transmitted |
13 |
APN Configuration in Roaming |
Use correct APN for roaming |
Data session is established |
14 |
Roaming Profile Validation |
Check if roaming is enabled on SIM |
Profile allows roaming |
15 |
Roaming Restrictions Enforcement |
Try to roam with restricted SIM |
Access is denied |
16 |
Roaming Zone Detection |
Detect roaming zone (e.g., EU, Global) |
Zone is correctly identified |
17 |
Roaming Tariff Notification |
Receive tariff SMS on roaming |
Notification is received |
18 |
Roaming Call Quality |
Measure voice quality during roaming call |
Quality is acceptable |
19 |
Roaming Data Speed |
Measure data speed while roaming |
Speed is within expected range |
20 |
Roaming Handover |
Move between roaming networks |
Call/data session is maintained |
21 |
Roaming with Dual SIM |
Use roaming on one SIM |
Roaming works independently |
22 |
Roaming in Airplane Mode |
Enable airplane mode and disable |
Roaming resumes |
23 |
Roaming in Border Area |
Switch between home and foreign network |
Seamless transition |
24 |
Roaming in Weak Signal Area |
Test roaming in low coverage |
Network is retained |
25 |
Roaming in High Load Area |
Test roaming in congested network |
Services remain accessible |
26 |
Roaming with VoLTE |
Use VoLTE while roaming |
Voice over LTE works |
27 |
Roaming with VoWiFi |
Use Wi-Fi calling while roaming |
Call connects via Wi-Fi |
28 |
Roaming with IMS |
Use IMS services while roaming |
Services are accessible |
29 |
Roaming with VPN |
Use VPN over roaming data |
VPN connects successfully |
30 |
Roaming with eSIM |
Use eSIM profile in foreign country |
Roaming works |
31 |
Roaming with 2G Network |
Roam on legacy GSM network |
Services are available |
32 |
Roaming with 3G Network |
Roam on UMTS network |
Services are available |
33 |
Roaming with 4G Network |
Roam on LTE network |
Services are available |
34 |
Roaming with 5G Network |
Roam on 5G NSA/SA network |
Services are available |
35 |
Roaming Billing Accuracy |
Check billing for roaming usage |
Charges match usage |
36 |
Roaming Usage Limit Alert |
Reach data usage threshold |
Alert is triggered |
37 |
Roaming Usage Blocking |
Exceed data cap |
Data is blocked or throttled |
38 |
Roaming Call Forwarding |
Enable call forwarding while roaming |
Calls are forwarded correctly |
39 |
Roaming Voicemail Access |
Access voicemail from abroad |
Voicemail is accessible |
40 |
Roaming Emergency Call |
Make emergency call while roaming |
Call connects to local emergency services |
41 |
Roaming SIM Toolkit |
Access SIM Toolkit menu abroad |
Menu is functional |
42 |
Roaming OTA Update |
Receive SIM OTA update while roaming |
Update is applied |
43 |
Roaming Network Blacklist |
Attempt to connect to blacklisted network |
Connection is denied |
44 |
Roaming Network Whitelist |
Connect to preferred roaming partner |
Connection is allowed |
45 |
Roaming with Multi-IMSI SIM |
Use alternate IMSI for roaming |
Authentication succeeds |
46 |
Roaming with IMSI Catcher Detection |
Detect rogue base station abroad |
Alert is triggered |
47 |
Roaming with SIM Swap Detection |
Detect SIM change while roaming |
Security alert is triggered |
48 |
Roaming with Secure Authentication |
Use AKA/MILENAGE authentication |
Authentication succeeds |
49 |
Roaming with Encryption |
Encrypt voice/data during roaming |
Communication is secure |
50 |
Roaming Session Logging |
Log all roaming activity |
Logs are complete and accurate |
SMS Support - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
Send SMS to Valid Number |
Send SMS to a reachable mobile number |
SMS is delivered successfully |
2 |
Receive SMS from Valid Number |
Receive SMS from another mobile |
SMS is received |
3 |
Send SMS to Invalid Number |
Send SMS to a non-existent number |
Error or failure report |
4 |
Receive SMS from Unknown Number |
Receive SMS from unlisted contact |
SMS is displayed |
5 |
Send Long SMS |
Send message >160 characters |
Message is split and reassembled |
6 |
Receive Long SMS |
Receive multipart SMS |
Message is reassembled correctly |
7 |
Send SMS with Special Characters |
Include emojis or symbols |
Characters are displayed correctly |
8 |
Send SMS with Unicode |
Send message in non-Latin script (e.g., Hindi, Arabic) |
Message is received correctly |
9 |
Send Flash SMS |
Send Class 0 SMS |
Message appears instantly on screen |
10 |
Send SMS with Delivery Report |
Request delivery confirmation |
Delivery report is received |
11 |
Send SMS in Roaming |
Send SMS while abroad |
SMS is delivered |
12 |
Receive SMS in Roaming |
Receive SMS while abroad |
SMS is received |
13 |
Send SMS in Weak Signal Area |
Send SMS with low signal |
SMS is queued or delayed |
14 |
Receive SMS in Weak Signal Area |
Receive SMS with poor coverage |
SMS is delayed or queued |
15 |
Send SMS in Airplane Mode |
Attempt to send SMS while offline |
SMS fails to send |
16 |
Receive SMS in Airplane Mode |
Turn off airplane mode |
Queued SMS is received |
17 |
Send SMS to Landline |
Send SMS to a fixed-line number |
SMS fails or is converted to voice |
18 |
Send SMS to Email Gateway |
Send SMS to email address via gateway |
Email is received |
19 |
Send SMS to Short Code |
Send SMS to service number (e.g., 12345) |
Service responds |
20 |
Receive SMS from Short Code |
Receive promotional or service SMS |
SMS is displayed |
21 |
Send SMS with SIM 1 |
Send SMS using SIM 1 in dual SIM device |
SMS is sent via SIM 1 |
22 |
Send SMS with SIM 2 |
Send SMS using SIM 2 |
SMS is sent via SIM 2 |
23 |
SMS Center Configuration |
Set correct SMSC number |
SMS is routed correctly |
24 |
SMS Center Misconfiguration |
Use incorrect SMSC |
SMS fails to send |
25 |
SMS Storage on SIM |
Store SMS on SIM card |
Message is saved |
26 |
SMS Storage on Phone |
Store SMS in phone memory |
Message is saved |
27 |
SMS Inbox Full |
Fill SMS storage |
New messages are rejected or overwrite |
28 |
SMS Deletion |
Delete SMS from inbox |
Message is removed |
29 |
SMS Backup |
Export SMS to cloud or file |
Messages are backed up |
30 |
SMS Restore |
Import SMS from backup |
Messages are restored |
31 |
SMS Notification |
Receive SMS while screen is off |
Notification is shown |
32 |
Silent SMS |
Receive silent SMS (no alert) |
Message is logged silently |
33 |
SMS Blocking |
Block SMS from specific number |
Message is not shown |
34 |
SMS Spam Detection |
Detect spam message |
Message is flagged |
35 |
SMS Encryption |
Encrypt SMS content |
Message is secure |
36 |
SMS Decryption |
Decrypt received SMS |
Message is readable |
37 |
SMS Timestamp Accuracy |
Check timestamp of received SMS |
Time is accurate |
38 |
SMS Retry Mechanism |
Retry sending failed SMS |
SMS is sent on retry |
39 |
SMS Queue Management |
Queue multiple SMS for sending |
Messages are sent in order |
40 |
SMS with Attachment (MMS Fallback) |
Attempt to send media via SMS |
Converted to MMS or fails |
41 |
SMS via USSD |
Send SMS through USSD menu |
Message is sent |
42 |
SMS via SIM Toolkit |
Send SMS using SIM app |
Message is sent |
43 |
SMS via Web Interface |
Send SMS from web portal |
Message is delivered |
44 |
SMS via API |
Send SMS using SMS gateway API |
Message is delivered |
45 |
SMS in Emergency Mode |
Send SMS during emergency call mode |
Message is prioritized |
46 |
SMS in Do Not Disturb Mode |
Receive SMS while DND is active |
Message is received silently |
47 |
SMS in Power Saving Mode |
Send/receive SMS with battery saver on |
SMS works normally |
48 |
SMS in Group Chat App (Fallback) |
Use SMS fallback in messaging app |
Message is sent via SMS |
49 |
SMS in Feature Phone |
Send/receive SMS on basic phone |
SMS works correctly |
50 |
SMS in Smartwatch |
Send/receive SMS on wearable device |
SMS is displayed and sent |
Call and Message Encryption - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
Enable Call Encryption |
Initiate encrypted voice call |
Call is encrypted |
2 |
Enable SMS Encryption |
Send encrypted SMS |
Message is encrypted |
3 |
Use A5/1 Algorithm |
Encrypt call using A5/1 |
Encryption is applied |
4 |
Use A5/2 Algorithm |
Encrypt call using A5/2 |
Encryption is applied (less secure) |
5 |
Use A5/3 Algorithm |
Encrypt call using A5/3 |
Strong encryption is applied |
6 |
Use A5/0 (No Encryption) |
Disable encryption intentionally |
Call is unencrypted |
7 |
Encryption Status Display |
Show encryption icon during call |
Icon is visible |
8 |
Encryption Key Generation |
Generate session key for call |
Key is securely generated |
9 |
Encryption Key Exchange |
Exchange keys between MS and BTS |
Keys are exchanged securely |
10 |
Ciphering Command from Network |
Receive ciphering command |
Device starts encryption |
11 |
Ciphering Mode Complete |
Confirm encryption activation |
Network acknowledges |
12 |
Encryption Activation Timing |
Measure time to activate encryption |
Activation is fast (<1s) |
13 |
Encryption in Roaming |
Use encryption while roaming |
Encryption is maintained |
14 |
Encryption in Weak Signal |
Maintain encryption with low signal |
Encryption persists |
15 |
Encryption in Handover |
Maintain encryption during cell switch |
No interruption in encryption |
16 |
Encryption in Emergency Call |
Make emergency call |
Encryption may be disabled (per spec) |
17 |
Encryption in SMS Delivery |
Encrypt SMS content |
Message is secure |
18 |
Encryption in SMS Storage |
Store encrypted SMS on SIM/phone |
Message remains encrypted |
19 |
Encryption in SMS Forwarding |
Forward encrypted SMS |
Message remains secure |
20 |
Encryption in Group SMS |
Send encrypted group message |
All recipients receive encrypted content |
21 |
Encryption in Flash SMS |
Send encrypted Class 0 SMS |
Message is secure |
22 |
Encryption in SIM Toolkit SMS |
Send encrypted SMS via SIM app |
Message is encrypted |
23 |
Encryption in OTA Update |
Receive encrypted SIM update |
Update is secure |
24 |
Encryption in VoLTE |
Encrypt voice over LTE |
Call is secure |
25 |
Encryption in VoWiFi |
Encrypt voice over Wi-Fi |
Call is secure |
26 |
Encryption in IMS |
Use encryption in IP Multimedia Subsystem |
Media and signaling are encrypted |
27 |
Encryption in 2G Network |
Use A5/1 or A5/3 in GSM |
Call is encrypted |
28 |
Encryption in 3G Network |
Use KASUMI cipher |
Call is encrypted |
29 |
Encryption in 4G Network |
Use SNOW 3G or AES |
Call is encrypted |
30 |
Encryption in 5G Network |
Use 128-NEA and 128-NIA |
Call and data are encrypted |
31 |
Encryption Key Refresh |
Refresh encryption keys mid-call |
Session remains secure |
32 |
Encryption Key Expiry |
Handle expired encryption key |
New key is generated |
33 |
Encryption Failure Handling |
Simulate encryption failure |
Call is dropped or downgraded |
34 |
Encryption Downgrade Attack Detection |
Detect forced downgrade to A5/0 |
Alert is triggered |
35 |
Encryption Logging |
Log encryption status |
Logs show ciphering activity |
36 |
Encryption Policy Enforcement |
Enforce encryption-only policy |
Unencrypted calls are blocked |
37 |
Encryption with Dual SIM |
Use encryption on both SIMs |
Encryption works independently |
38 |
Encryption with eSIM |
Use encryption with embedded SIM |
Encryption is active |
39 |
Encryption with SIM Swap |
Detect SIM change during encrypted session |
Session is terminated |
40 |
Encryption with IMSI Catcher |
Detect rogue BTS disabling encryption |
Alert is triggered |
41 |
Encryption with Silent SMS |
Send encrypted silent SMS |
Message is secure |
42 |
Encryption with OTA Key Provisioning |
Receive encryption keys over the air |
Keys are securely installed |
43 |
Encryption with Secure Boot |
Ensure encryption keys are protected at boot |
Keys are intact |
44 |
Encryption with Secure Element |
Store keys in secure hardware |
Keys are protected |
45 |
Encryption with SIM Applet |
Use SIM applet for encryption |
Message is encrypted |
46 |
Encryption with Smartwatch |
Use encryption in wearable device |
Call/SMS is secure |
47 |
Encryption with Feature Phone |
Use basic encryption on 2G phone |
Call is encrypted |
48 |
Encryption with Smartphone App |
Use app-based encryption (e.g., Signal fallback) |
Message is encrypted |
49 |
Encryption with Cloud Backup |
Backup encrypted SMS |
Data remains encrypted |
50 |
Encryption Compliance Check |
Verify compliance with GSM encryption standards |
Device passes test |
Supplementary Services - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
Activate Call Forwarding (Unconditional) |
Forward all calls to another number |
Calls are forwarded automatically |
2 |
Activate Call Forwarding (Busy) |
Forward calls when line is busy |
Calls are forwarded when busy |
3 |
Activate Call Forwarding (No Reply) |
Forward calls after timeout |
Calls are forwarded after delay |
4 |
Activate Call Forwarding (Unreachable) |
Forward calls when phone is off |
Calls are forwarded |
5 |
Deactivate Call Forwarding |
Turn off all call forwarding options |
Calls ring normally |
6 |
Check Call Forwarding Status |
Query current forwarding settings |
Status is displayed |
7 |
Activate Call Waiting |
Enable notification for incoming call during active call |
Notification is received |
8 |
Deactivate Call Waiting |
Disable call waiting |
Second call is rejected |
9 |
Call Waiting Notification |
Receive second call while on call |
Notification is shown |
10 |
Switch Between Calls |
Toggle between two active calls |
Active call is switched |
11 |
Merge Calls (Conference) |
Merge two calls into a conference |
All parties are connected |
12 |
Caller ID Display |
Show callers number on incoming call |
Number is displayed |
13 |
Caller ID Restriction |
Hide callers number |
Number is hidden |
14 |
Caller ID Request |
Request caller ID from network |
Number is shown if available |
15 |
Activate Call Barring (All Outgoing) |
Block all outgoing calls |
Outgoing calls are blocked |
16 |
Activate Call Barring (International) |
Block international calls |
International calls are blocked |
17 |
Activate Call Barring (Incoming) |
Block all incoming calls |
Incoming calls are blocked |
18 |
Deactivate Call Barring |
Remove all call barring |
Calls are allowed |
19 |
Call Barring Password Change |
Change barring password |
Password is updated |
20 |
Call Barring Status Check |
Query current barring settings |
Status is displayed |
21 |
Call Forwarding to Voicemail |
Forward calls to voicemail |
Voicemail answers |
22 |
Call Waiting with Voicemail |
Receive second call while first goes to voicemail |
First call is recorded |
23 |
Call Forwarding Loop Prevention |
Prevent forwarding loops |
Loop is blocked |
24 |
Call Waiting with Conference |
Add waiting call to conference |
All calls are merged |
25 |
Call Forwarding to International Number |
Forward to number abroad |
Call is forwarded |
26 |
Call Forwarding with DND |
Forward calls while Do Not Disturb is active |
Calls are forwarded |
27 |
Call Waiting in Roaming |
Use call waiting while roaming |
Feature works |
28 |
Call Forwarding in Roaming |
Forward calls while roaming |
Calls are forwarded |
29 |
Call Barring in Roaming |
Apply barring while roaming |
Calls are blocked |
30 |
Call Waiting with Data Session |
Receive call during data usage |
Notification is shown |
31 |
Call Forwarding with Dual SIM |
Forward calls from SIM 1 |
Calls are forwarded correctly |
32 |
Call Waiting with Dual SIM |
Receive second call on SIM 2 |
Notification is received |
33 |
Call Barring with Dual SIM |
Block calls on one SIM |
Calls are blocked on selected SIM |
34 |
Call Forwarding Activation via USSD |
Use USSD code to activate forwarding |
Forwarding is enabled |
35 |
Call Waiting Activation via USSD |
Use USSD code to activate call waiting |
Feature is enabled |
36 |
Call Barring Activation via USSD |
Use USSD code to activate barring |
Feature is enabled |
37 |
Call Forwarding Notification |
Notify user when call is forwarded |
Notification is shown |
38 |
Call Waiting Notification Tone |
Hear tone during active call |
Tone is audible |
39 |
Call Barring with Emergency Call |
Attempt emergency call with barring active |
Emergency call is allowed |
40 |
Call Forwarding with SIM Toolkit |
Activate via SIM menu |
Forwarding is enabled |
41 |
Call Waiting with VoLTE |
Use call waiting on VoLTE call |
Feature works |
42 |
Call Forwarding with VoWiFi |
Forward calls while on Wi-Fi calling |
Calls are forwarded |
43 |
Call Barring with VoLTE |
Block outgoing VoLTE calls |
Calls are blocked |
44 |
Call Waiting with IMS |
Use call waiting in IMS |
Feature works |
45 |
Call Forwarding with IMS |
Forward IMS-based calls |
Calls are forwarded |
46 |
Call Barring with IMS |
Block IMS-based calls |
Calls are blocked |
47 |
Call Waiting with Video Call |
Receive second call during video call |
Notification is shown |
48 |
Call Forwarding to SIP Number |
Forward to VoIP/SIP number |
Call is forwarded |
49 |
Call Barring Password Retry Limit |
Enter wrong password repeatedly |
Barring is locked |
50 |
Call Forwarding with Expiry Timer |
Set forwarding for limited time |
Forwarding expires as scheduled |
Efficient Spectrum Usage - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
TDMA Slot Allocation |
Assign time slots to users |
Slots are allocated without conflict |
2 |
TDMA Frame Synchronization |
Synchronize mobile with base station |
Timing is aligned |
3 |
TDMA Slot Timing Accuracy |
Measure slot timing jitter |
Within acceptable limits |
4 |
TDMA Slot Handover |
Maintain slot during cell handover |
No call drop |
5 |
Frequency Reuse Pattern |
Apply reuse pattern (e.g., 3/9) |
Interference is minimized |
6 |
Co-channel Interference Test |
Measure interference from reused frequencies |
Signal quality is acceptable |
7 |
Adjacent Channel Interference Test |
Measure interference from neighboring channels |
Interference is within limits |
8 |
Frequency Planning Validation |
Validate frequency reuse plan |
Plan meets capacity and coverage goals |
9 |
Dynamic Frequency Allocation |
Allocate frequencies based on load |
Spectrum is used efficiently |
10 |
Frequency Hopping Activation |
Enable frequency hopping |
Hopping is active |
11 |
Frequency Hopping Performance |
Measure call quality with hopping |
Quality improves or remains stable |
12 |
TDMA with Voice Call |
Make a voice call using TDMA slot |
Call is clear |
13 |
TDMA with SMS |
Send SMS using control channel |
Message is delivered |
14 |
TDMA with Data Session |
Use GPRS/EDGE over TDMA |
Data is transmitted |
15 |
TDMA Slot Reuse in Neighboring Cell |
Use same slot in adjacent cell |
No interference |
16 |
Cell Sectorization Efficiency |
Use 3-sector antennas |
Capacity increases |
17 |
Frequency Reuse in Urban Area |
Deploy reuse pattern in dense area |
Network handles high load |
18 |
Frequency Reuse in Rural Area |
Use wider reuse pattern |
Coverage is maximized |
19 |
TDMA Slot Collision Detection |
Detect overlapping transmissions |
Collisions are avoided |
20 |
TDMA Slot Guard Period |
Verify guard time between slots |
No overlap occurs |
21 |
TDMA Slot Power Control |
Adjust power per slot |
Interference is reduced |
22 |
TDMA Slot Allocation in Handover |
Allocate new slot during handover |
Seamless transition |
23 |
Frequency Reuse with Indoor Coverage |
Use microcells with reuse |
Indoor coverage is effective |
24 |
Frequency Reuse with Outdoor Coverage |
Use macrocells with reuse |
Outdoor coverage is effective |
25 |
TDMA Slot Allocation in Congestion |
Allocate slots under high load |
Calls are managed efficiently |
26 |
TDMA Slot Allocation in Idle Network |
Allocate slots with low traffic |
Resources are conserved |
27 |
Frequency Reuse with Repeaters |
Use repeaters in reused frequencies |
No interference introduced |
28 |
Frequency Reuse with Pico Cells |
Use small cells in reuse plan |
Capacity is increased |
29 |
TDMA Slot Allocation for Emergency |
Prioritize emergency calls |
Slot is allocated immediately |
30 |
Frequency Reuse with Load Balancing |
Shift load between cells |
Spectrum is balanced |
31 |
TDMA Slot Allocation for Data |
Allocate slots for GPRS/EDGE |
Data is transmitted |
32 |
TDMA Slot Allocation for Voice |
Allocate slots for voice |
Call is established |
33 |
Frequency Reuse with Interference Avoidance |
Avoid reuse in high-interference zones |
Signal quality is maintained |
34 |
TDMA Slot Allocation in Dual Band |
Use 900/1800 MHz bands |
Slots are allocated correctly |
35 |
Frequency Reuse in Multi-Operator Area |
Share spectrum with other operators |
No cross-interference |
36 |
TDMA Slot Allocation in Roaming |
Allocate slots for roaming user |
Call is connected |
37 |
Frequency Reuse with Smart Antennas |
Use beamforming to reduce interference |
Capacity is improved |
38 |
TDMA Slot Allocation with QoS |
Prioritize high-QoS users |
Slots are allocated accordingly |
39 |
Frequency Reuse with Inter-BTS Sync |
Synchronize base stations |
Interference is minimized |
40 |
TDMA Slot Allocation with Paging |
Allocate slot for paging |
User is notified |
41 |
Frequency Reuse with Guard Bands |
Use guard bands between channels |
Crosstalk is reduced |
42 |
TDMA Slot Allocation with Broadcast |
Use slot for system broadcast |
Message is received |
43 |
Frequency Reuse with Frequency Planning Tool |
Simulate reuse plan |
Plan is optimized |
44 |
TDMA Slot Allocation with Encryption |
Encrypt data in slot |
Data is secure |
45 |
Frequency Reuse with Interference Monitoring |
Monitor spectrum usage |
Interference is detected and managed |
46 |
TDMA Slot Allocation with Power Saving |
Use DTX to save power |
Battery life is extended |
47 |
Frequency Reuse with Spectrum Analyzer |
Measure spectrum efficiency |
Usage is optimized |
48 |
TDMA Slot Allocation with Load Forecasting |
Predict and allocate slots |
Network is prepared |
49 |
Frequency Reuse with AI Optimization |
Use AI to optimize reuse |
Capacity is maximized |
50 |
TDMA Slot Allocation with Multi-SIM |
Allocate slots for dual SIM device |
Both SIMs operate efficiently |
Low Power Consumption - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
Enable Discontinuous Transmission (DTX) |
Activate DTX during silence periods |
Power usage is reduced |
2 |
Enable Discontinuous Reception (DRX) |
Activate DRX in idle mode |
Battery life is extended |
3 |
Measure Power in Idle Mode |
Monitor power usage when idle |
Consumption is minimal |
4 |
Measure Power in Standby Mode |
Monitor power usage in standby |
Consumption is low |
5 |
Measure Power During Voice Call |
Monitor battery usage during call |
Within expected limits |
6 |
Measure Power During SMS |
Monitor battery usage while sending SMS |
Minimal power used |
7 |
Measure Power During Data Session |
Monitor battery usage during GPRS/EDGE session |
Usage is efficient |
8 |
Power Consumption with DTX Off |
Disable DTX and measure power |
Consumption increases |
9 |
Power Consumption with DRX Off |
Disable DRX and measure power |
Consumption increases |
10 |
Power Saving in Weak Signal Area |
Test power usage with poor signal |
Device increases power use moderately |
11 |
Power Saving in Strong Signal Area |
Test power usage with strong signal |
Device uses minimal power |
12 |
Battery Life in Idle State |
Measure standby time |
Battery lasts several days |
13 |
Battery Life in Active State |
Measure talk time |
Battery lasts as per spec |
14 |
Power Usage During Handover |
Measure power during cell switch |
No significant spike |
15 |
Power Usage During Roaming |
Measure power while roaming |
Usage remains efficient |
16 |
Power Usage with Background Apps |
Run background apps |
GSM usage remains low |
17 |
Power Usage with Dual SIM |
Use two SIMs simultaneously |
Battery usage is optimized |
18 |
Power Usage with SIM Toolkit |
Use SIM Toolkit app |
Minimal impact on battery |
19 |
Power Usage with Call Forwarding |
Enable call forwarding |
No extra power used |
20 |
Power Usage with Call Waiting |
Enable call waiting |
No extra power used |
21 |
Power Usage with Encryption Enabled |
Enable A5/1 or A5/3 encryption |
Slight increase, within limits |
22 |
Power Usage with SMS Encryption |
Send encrypted SMS |
Minimal impact |
23 |
Power Usage During Paging |
Monitor power during paging cycles |
DRX optimizes usage |
24 |
Power Usage During Cell Reselection |
Measure power during idle reselection |
Usage is efficient |
25 |
Power Usage During Location Update |
Measure power during periodic updates |
Usage is optimized |
26 |
Power Usage with Frequency Hopping |
Enable hopping |
No significant increase |
27 |
Power Usage with Static Frequency |
Disable hopping |
Usage remains stable |
28 |
Power Usage with TDMA Slot Allocation |
Use assigned time slot |
Power is conserved |
29 |
Power Usage with GPRS Idle |
Stay connected to GPRS without data |
DRX reduces power |
30 |
Power Usage with GPRS Active |
Transmit data via GPRS |
Usage is efficient |
31 |
Power Usage with EDGE Active |
Transmit data via EDGE |
Usage is efficient |
32 |
Power Usage with Cell Broadcast |
Receive broadcast messages |
Minimal power used |
33 |
Power Usage with Emergency Call |
Make emergency call |
Usage is normal |
34 |
Power Usage with SIM Swap |
Swap SIM cards |
No abnormal power usage |
35 |
Power Usage with OTA Update |
Receive SIM OTA update |
Usage is optimized |
36 |
Power Usage with Network Search |
Search for network manually |
Temporary increase, returns to idle |
37 |
Power Usage with Auto Network Select |
Use automatic selection |
Efficient scanning |
38 |
Power Usage with Airplane Mode |
Enable airplane mode |
Power usage drops significantly |
39 |
Power Usage with Power Saving Mode |
Enable device power saver |
GSM usage is minimized |
40 |
Power Usage with Background Sync Off |
Disable background sync |
GSM usage is reduced |
41 |
Power Usage with VoLTE Off |
Use GSM-only voice |
Usage is optimized |
42 |
Power Usage with VoWiFi Off |
Use GSM-only voice |
Usage is optimized |
43 |
Power Usage with IMS Off |
Use GSM fallback |
Usage is optimized |
44 |
Power Usage with SIM Applet Idle |
Keep SIM applet running |
Minimal impact |
45 |
Power Usage with SIM Applet Active |
Run SIM applet task |
Slight increase, within limits |
46 |
Power Usage with Cell Lock |
Lock to specific cell |
Reduces reselection power |
47 |
Power Usage with Network Lock |
Lock to specific network |
Reduces scanning power |
48 |
Power Usage with Low Battery |
Operate under low battery condition |
GSM functions remain stable |
49 |
Power Usage with Battery Saver App |
Use third-party saver app |
GSM usage is optimized |
50 |
Power Usage with Smartwatch Pairing |
Pair with GSM-enabled wearable |
Usage remains within expected limits |
Emergency Calling - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
Emergency Call with SIM |
Make emergency call with active SIM |
Call connects to emergency services |
2 |
Emergency Call without SIM |
Remove SIM and dial emergency number |
Call connects successfully |
3 |
Emergency Call with Locked SIM |
Use SIM with PIN lock |
Emergency call is allowed |
4 |
Emergency Call with No Network |
No network coverage |
Call attempts on any available network |
5 |
Emergency Call with Roaming Disabled |
Roaming turned off |
Emergency call still connects |
6 |
Emergency Call in Airplane Mode |
Enable airplane mode and dial emergency |
Prompt to disable airplane mode |
7 |
Emergency Call with No Credit |
Prepaid balance is zero |
Emergency call is allowed |
8 |
Emergency Call with Barred SIM |
Outgoing calls barred |
Emergency call bypasses restriction |
9 |
Emergency Call with Network Congestion |
Simulate high traffic |
Emergency call is prioritized |
10 |
Emergency Call with 112 |
Dial 112 |
Call connects to emergency services |
11 |
Emergency Call with 911 |
Dial 911 |
Call connects to emergency services |
12 |
Emergency Call with 100 |
Dial 100 (India) |
Call connects to police |
13 |
Emergency Call with 101 |
Dial 101 (fire) |
Call connects to fire department |
14 |
Emergency Call with 102 |
Dial 102 (ambulance) |
Call connects to ambulance |
15 |
Emergency Call with 999 |
Dial 999 (UK) |
Call connects to emergency services |
16 |
Emergency Call with 000 |
Dial 000 (Australia) |
Call connects to emergency services |
17 |
Emergency Call with 08 Prefix |
Dial emergency number with prefix |
Call is routed correctly |
18 |
Emergency Call with VoLTE |
Use VoLTE for emergency call |
Call connects successfully |
19 |
Emergency Call with VoWiFi |
Use Wi-Fi calling |
Call connects if supported |
20 |
Emergency Call with IMS |
Use IMS-based emergency call |
Call is routed correctly |
21 |
Emergency Call with eSIM |
Use eSIM profile |
Emergency call is allowed |
22 |
Emergency Call with Dual SIM |
Use device with two SIMs |
Call works regardless of SIM status |
23 |
Emergency Call with Feature Phone |
Use basic GSM phone |
Emergency call connects |
24 |
Emergency Call with Smartphone |
Use smartphone |
Emergency call connects |
25 |
Emergency Call with Smartwatch |
Use GSM-enabled wearable |
Call connects to emergency services |
26 |
Emergency Call with Locked Phone |
Make call from lock screen |
Emergency dialer is accessible |
27 |
Emergency Call with No Battery |
Attempt call with low battery |
Call proceeds if battery allows |
28 |
Emergency Call with SIM Toolkit |
Access emergency via SIM menu |
Call is initiated |
29 |
Emergency Call with USSD Blocked |
USSD disabled |
Emergency call still works |
30 |
Emergency Call with Network Lock |
Device locked to specific network |
Emergency call bypasses lock |
31 |
Emergency Call with IMSI Catcher |
Attempt call via rogue BTS |
Call is blocked or redirected |
32 |
Emergency Call with Encryption |
Use encrypted call path |
Call is secure |
33 |
Emergency Call with Location Sharing |
Share location during call |
Location is transmitted |
34 |
Emergency Call with GPS Off |
GPS disabled |
Network-based location is used |
35 |
Emergency Call with GPS On |
GPS enabled |
Accurate location is shared |
36 |
Emergency Call with Call Recording |
Record emergency call |
Recording is stored (if allowed) |
37 |
Emergency Call with Call Timer |
Measure call duration |
Timer functions correctly |
38 |
Emergency Call with Call Log Entry |
Check call log after emergency call |
Entry is recorded |
39 |
Emergency Call with No Call Log |
Privacy mode enabled |
Call is not logged |
40 |
Emergency Call with Language Prompt |
Prompt for language selection |
User selects preferred language |
41 |
Emergency Call with Accessibility Mode |
Use accessibility features |
Emergency call is accessible |
42 |
Emergency Call with Hearing Aid Mode |
Use hearing aid compatibility |
Call is audible |
43 |
Emergency Call with Visual Alert |
Flash or vibration on call connect |
Alert is triggered |
44 |
Emergency Call with Auto Redial |
Retry if call fails |
Call is retried automatically |
45 |
Emergency Call with SIM Swap |
Swap SIM during emergency call |
Call continues or reconnects |
46 |
Emergency Call with OTA Update |
During SIM update |
Emergency call is still allowed |
47 |
Emergency Call with Network Switch |
Switch between 2G/3G/4G |
Call is maintained |
48 |
Emergency Call with Power Saving Mode |
Enable battery saver |
Call is prioritized |
49 |
Emergency Call with Do Not Disturb |
DND enabled |
Emergency call bypasses DND |
50 |
Emergency Call with Airplane Crash Mode |
Simulate crash detection |
Emergency call is auto-initiated |
Support for Data Services - Testcases
# |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
GPRS Activation |
Enable GPRS on device |
GPRS icon appears |
2 |
EDGE Activation |
Enable EDGE on device |
EDGE icon appears |
3 |
GPRS Network Registration |
Register to GPRS network |
PDP context is activated |
4 |
EDGE Network Registration |
Register to EDGE network |
PDP context is activated |
5 |
GPRS Data Session Start |
Initiate data session |
Data is transmitted |
6 |
EDGE Data Session Start |
Initiate EDGE session |
Data is transmitted |
7 |
GPRS IP Address Allocation |
Obtain IP address |
IP is assigned |
8 |
EDGE IP Address Allocation |
Obtain IP address |
IP is assigned |
9 |
GPRS DNS Resolution |
Resolve domain name |
DNS query succeeds |
10 |
EDGE DNS Resolution |
Resolve domain name |
DNS query succeeds |
11 |
GPRS Web Browsing |
Open website using GPRS |
Page loads successfully |
12 |
EDGE Web Browsing |
Open website using EDGE |
Page loads successfully |
13 |
GPRS Email Access |
Access email via GPRS |
Email syncs successfully |
14 |
EDGE Email Access |
Access email via EDGE |
Email syncs successfully |
15 |
GPRS MMS Sending |
Send MMS over GPRS |
MMS is delivered |
16 |
EDGE MMS Sending |
Send MMS over EDGE |
MMS is delivered |
17 |
GPRS MMS Receiving |
Receive MMS over GPRS |
MMS is received |
18 |
EDGE MMS Receiving |
Receive MMS over EDGE |
MMS is received |
19 |
GPRS Speed Test |
Measure download/upload speed |
Speed is within GPRS range (~56-114 kbps) |
20 |
EDGE Speed Test |
Measure download/upload speed |
Speed is within EDGE range (~384 kbps) |
21 |
GPRS Session Stability |
Maintain long data session |
No disconnection |
22 |
EDGE Session Stability |
Maintain long data session |
No disconnection |
23 |
GPRS Handover |
Move between cells during session |
Session is maintained |
24 |
EDGE Handover |
Move between cells during session |
Session is maintained |
25 |
GPRS Roaming |
Use GPRS while roaming |
Data session is established |
26 |
EDGE Roaming |
Use EDGE while roaming |
Data session is established |
27 |
GPRS with Dual SIM |
Use GPRS on SIM 1 |
Data is transmitted |
28 |
EDGE with Dual SIM |
Use EDGE on SIM 2 |
Data is transmitted |
29 |
GPRS with SIM Toolkit |
Access SIM-based data service |
Service is accessed |
30 |
EDGE with SIM Toolkit |
Access SIM-based data service |
Service is accessed |
31 |
GPRS with Static IP |
Assign static IP |
IP is assigned correctly |
32 |
EDGE with Static IP |
Assign static IP |
IP is assigned correctly |
33 |
GPRS with Dynamic IP |
Use DHCP |
IP is assigned dynamically |
34 |
EDGE with Dynamic IP |
Use DHCP |
IP is assigned dynamically |
35 |
GPRS with VPN |
Connect to VPN over GPRS |
Tunnel is established |
36 |
EDGE with VPN |
Connect to VPN over EDGE |
Tunnel is established |
37 |
GPRS with Proxy |
Use HTTP proxy |
Traffic is routed correctly |
38 |
EDGE with Proxy |
Use HTTP proxy |
Traffic is routed correctly |
39 |
GPRS with Firewall |
Access internet with firewall |
Access is controlled |
40 |
EDGE with Firewall |
Access internet with firewall |
Access is controlled |
41 |
GPRS with NAT |
Use NAT for IP translation |
Data flows correctly |
42 |
EDGE with NAT |
Use NAT for IP translation |
Data flows correctly |
43 |
GPRS Session Timeout |
Leave session idle |
Session is terminated after timeout |
44 |
EDGE Session Timeout |
Leave session idle |
Session is terminated after timeout |
45 |
GPRS Billing Accuracy |
Track data usage |
Usage matches billing |
46 |
EDGE Billing Accuracy |
Track data usage |
Usage matches billing |
47 |
GPRS with Power Saving Mode |
Enable power saver |
Data session remains stable |
48 |
EDGE with Power Saving Mode |
Enable power saver |
Data session remains stable |
49 |
GPRS with Background Sync |
Sync apps in background |
Data is synced |
50 |
EDGE with Background Sync |
Sync apps in background |
Data is synced |
Reference links