Specifications

Table of Contents
Multi-Tech Systems, Inc. CDMA AT Commands Reference Guide (PN S000294K) 3
Contents
Chapter 1 – Introduction ................................................................................................................................................ 9
Scope of This Document ............................................................................................................................................ 9
Related References .................................................................................................................................................... 9
Terminology and Acronyms ...................................................................................................................................... 10
Chapter 2 – AT Command Features ........................................................................................................................... 13
Serial Interface Settings ........................................................................................................................................... 13
Command Line ......................................................................................................................................................... 13
Information Responses and Result Codes ............................................................................................................... 13
Chapter 3 - General Commands ................................................................................................................................. 14
Attention AT ........................................................................................................................................................... 14
Request Revision Identification +CGMR ................................................................................................................. 14
Electronic Serial Number +CGSN ........................................................................................................................... 14
Select TE Character Set +CSCS ............................................................................................................................. 15
Request IMSI +CIMI ................................................................................................................................................ 15
Capabilities List +GCAP .......................................................................................................................................... 15
Repeat Last Command A/ ....................................................................................................................................... 15
Phone Offline +CPOF ............................................................................................................................................. 16
Set Phone Functionality +CFUN ............................................................................................................................. 16
Phone Activity Status +CPAS .................................................................................................................................. 16
Report Mobile Equipment Errors +CMEE ................................................................................................................ 16
Keypad Control +CKPD .......................................................................................................................................... 17
Clock Management +CCLK ..................................................................................................................................... 17
Ring Melody Playback +CRMP ............................................................................................................................... 17
Ringer Sound Level +CRSL .................................................................................................................................... 18
Subscriber Number +CNUM .................................................................................................................................... 18
Select Type of Address +CSTA ............................................................................................................................... 18
View Modem Timers +WTMR ................................................................................................................................. 19
Chapter 4 – Call Control Commands .......................................................................................................................... 20
Dial Command D ..................................................................................................................................................... 20
Hang-Up Command H ............................................................................................................................................. 21
Answer a Call A ....................................................................................................................................................... 22
Remote Disconnection ............................................................................................................................................. 22
Extended Error Report +CEER ............................................................................................................................... 22
DTMF Signals +VTD, +VTS ................................................................................................................................... 23
DTMF Start and Stop Continuous +WSDT, +WSDS .............................................................................................. 23
Redial Last Telephone Number DL ......................................................................................................................... 24
Automatic Dialing with DTR %Dn ............................................................................................................................ 24
Automatic Answer S0 .............................................................................................................................................. 24
Incoming Call Bearer +CICB ................................................................................................................................... 25
Single Numbering Scheme +CSNS ......................................................................................................................... 25
Microphone Gain +VGT........................................................................................................................................... 26
Volume Gain Control +VGR .................................................................................................................................... 26
Microphone Mute Control +CMUT ........................................................................................................................... 27
Speaker & Microphone Selection +SPEAKER ........................................................................................................ 27
Echo Cancellation +ECHO ...................................................................................................................................... 27
Side Tone Modification +SIDET .............................................................................................................................. 28
Initialize Voice Parameters +VIP ............................................................................................................................. 28
TTY Mode +WTTY .................................................................................................................................................. 28
Chapter 5 – Network Service Commands .................................................................................................................. 29
Signal Quality +CSQ ............................................................................................................................................... 29
Mode Preference +COPS ........................................................................................................................................ 29
Band Preference +WBND ....................................................................................................................................... 30
Roam Preference +WRMP ...................................................................................................................................... 31
Network Registration & Roaming +CREG ............................................................................................................... 31
Change NAM Selection +WNAM ............................................................................................................................. 32
Read Current NAM +WCNM ................................................................................................................................... 32
Emergency Mode +WSOS ...................................................................................................................................... 33
Extended Roam Indication +WRMW ....................................................................................................................... 34
Chapter 6 – SIM Card Operational Commands .......................................................................................................... 35
Enter PIN +CPIN ..................................................................................................................................................... 35
Enter PIN2 +CPIN2 ................................................................................................................................................. 36
PIN Remaining Attempt Number +CPINC ............................................................................................................... 36
Facility Lock +CLCK ................................................................................................................................................ 37
Change Password +CPWD ..................................................................................................................................... 38
Card Identification +CCID........................................................................................................................................ 38