3.2.6.2. AT+DS - Data Compression 351
3.2.6.3. AT+DR - Data Compression Reporting 353
Jamming Detection and Report 355
3.3.1. AT#JDRENH2 - Enhanced Jamming Detection and Report 355
3.3.2. AT#JDRGNSS - GNSS Jamming Detect & Report 361
3.3.3. AT#JDR4GCFG - LTE Jamming Detection Threshold Configuration 364
Network 366
3.4.1. AT+CNUM - Subscriber Number 366
3.4.2. AT+COPN - Read Operator Names 368
3.4.3. AT+CREG - Network Registration Status 370
3.4.4. AT+CLCK - Facility Lock/Unlock 374
3.4.5. AT+CPWD - Change Facility Password 378
3.4.6. AT+CLIR - Calling Line Identification Restriction 381
3.4.7. AT+COLP - Connected Line Identification Presentation 384
3.4.8. AT+CHLD - Call Holding Services 387
3.4.9. AT+CTFR - Call Deflection 389
3.4.10. AT+CUSD - Unstructured Supplementary Service Data 391
3.4.11. AT+CAOC - Advice of Charge 394
3.4.12. AT+CLCC - List Current Calls 397
3.4.13. AT+CSSN - SS Notification 400
3.4.14. AT+CCUG - Closed User Group 403
3.4.15. AT+CPOL - Preferred Operator List 405
3.4.16. AT#CODECINFO - Codec Information 409
3.4.17. AT+CPLS - Selection of Preferred PLMN List 415
3.4.18. AT+CSQ - Signal Quality 417
3.4.19. AT#SERVINFO - Serving Cell Information 423
3.4.20. AT#NWEN - Network Emergency Number Update 427
3.4.21. AT#BCCHLOCK - Lock to Single BCCH ARFCN 429
3.4.22. AT#PLMNMODE - PLMN List Selection 433
3.4.23. AT#FPLMN - Periodical FPLMN Cleaning 435
3.4.24. AT#CODEC - GSM and UMTS Audio Codec 437
3.4.25. AT#BND - Select Band 439
3.4.26. AT#AUTOBND - Automatic Band Selection 445
3.4.27. AT#SNUM - Subscriber Number 446
3.4.28. AT#PSNT - Packet Service Network Type 448
3.4.29. AT#ENCALG - Set Encryption Algorithm 451
3.4.30. AT+CEMODE - Set Mode of Operation for EPS 455
3.4.31. AT+CPNER - Primary Notification Event Reporting 457
3.4.32. AT+CESQ - Extended Signal Quality 459