3.1.9. AT+VTD - Tone Duration 53
General Control and Config 54
3.2.1. Command Line Prefixes 54
3.2.1.1. AT - Starting a Command Line 54
3.2.1.2. A/ - Last Command Automatic Repetition 55
3.2.2. Generic Modem Control 56
3.2.2.1. AT&F - Set to Factory-Defined Configuration 56
3.2.2.2. ATZ - Soft Reset 57
3.2.2.3. AT+GCAP - Capabilities List 58
3.2.2.4. AT+GMI - Manufacturer Identification 59
3.2.2.5. AT+GMM - Model Identification 60
3.2.2.6. AT+GMR - Revision Identification 61
3.2.2.7. AT+GSN - Serial Number 62
3.2.2.8. AT+CGSN - Request Product Serial Number Identification 64
3.2.2.9. AT#CGSN - Product Serial Number Identification 66
3.2.2.10. AT#SWPKGV - Request Software Package Version 68
3.2.2.11. AT+CPAS - Phone Activity Status 70
3.2.2.12. AT+CFUN - Set Phone Functionality 72
3.2.2.13. AT+CACM - Accumulated Call Meter 75
3.2.2.14. AT+CAMM - Accumulated Call Meter Maximum 77
3.2.2.15. AT+CCWE - Call Meter Maximum Event 79
3.2.2.16. AT+CMEE - Report Mobile Equipment Error 81
3.2.2.17. AT+CEER - Extended Error Report 83
3.2.2.18. AT+CSCS - Select TE Character Set 84
3.2.2.19. AT+PACSP - Network Selection Menu Availability 86
3.2.2.20. AT+CMUX - Multiplexing Mode 87
3.2.2.21. AT#CMUXMODE - CMUX Mode Set 90
3.2.2.22. AT+CPUC - Price per Unit and Currency Table 92
3.2.2.23. AT#FWSWITCH - Set Active Firmware Image 94
3.2.2.24. AT#STUNEANT - Set Tunable Antenna Interface 97
3.2.3. S Parameters 104
3.2.3.1. ATS0 - Number of Rings to Auto Answer 104
3.2.3.2. ATS2 - Escape Character 105