User Manual
UG_2901CE_027 73M29 01CE AT Command User Guide
Rev. 2.0 3
Table of Contents
1
Introduction ......................................................................................................................................... 7
2 AT Commands ..................................................................................................................................... 8
2.1 A – Answer .................................................................................................................................... 8
2.2 A/ – Repeat Last Command ......................................................................................................... 8
2.3 B – Bell, ITU, V.23, or Bell202 Operation ..................................................................................... 8
2.4 C[n] – Select Carrier Detect Option .............................................................................................. 8
2.5 D[n...n] – Dialing String ................................................................................................................. 9
2.6 E[n] – Echo Commands On/Off .................................................................................................. 10
2.7 F– Load Factory Defaults ........................................................................................................... 10
2.8 G – Guard Tone Select ............................................................................................................... 10
2.9 H[n] – On-Hook/Off-Hook Control ............................................................................................... 10
2.10 I[n] – Identification and ROM Tests ............................................................................................ 11
2.11 J[n] – PTT Test ........................................................................................................................... 11
2.12K[n] – Flow Control ..................................................................................................................... 12
2.13L[n] – Fast Connect..................................................................................................................... 12
2.14 N[n] – Data Set Ready Signal Control ........................................................................................ 12
2.15 O[n] – Return to On-Line ............................................................................................................ 14
2.16P – Pulse Dial ............................................................................................................................. 14
2.17 Q[n] – Result Codes On/Off ........................................................................................................ 14
2.18R[n] – Select Data Terminal Ready Option ................................................................................ 14
2.19 S[r] – Modify/Read S-registers .................................................................................................... 15
2.20 T – Tone Dialing .......................................................................................................................... 15
2.21 V[n] – Select Result Codes Numbers/Words .............................................................................. 16
2.22 W[n] – Select Extended Result Code ......................................................................................... 16
2.23X[n] – Select Result Code Set .................................................................................................... 17
2.24 Y[n] – Selects Asynchronous or Synchronous Modes................................................................ 18
2.25 Z – Reset Modem ....................................................................................................................... 18
2.26+++ .............................................................................................................................................. 18
2.27+++AT ......................................................................................................................................... 18
3 Extended AT Commands ................................................................................................................. 19
3.1 @A[p] – Modify/Read MAC RAM Memory Value ...................................................................... 19
3.2 @B[p] – Modify/Read IRAM Memory Value ............................................................................... 19
3.3 @L[n] – Set Lease Line Operation ............................................................................................. 19
3.4 @P[n] – Alternate Pulse Dial Make/Break Ratio ........................................................................ 19
3.5 @T[n] – Select Test Mode .......................................................................................................... 20
3.6 @Z Power Down ......................................................................................................................... 20
4 S-registers ......................................................................................................................................... 21
4.1 Setting S-registers ...................................................................................................................... 21
4.2 Reading S-registers .................................................................................................................... 21
4.3 Setting/Reading S-registers While in Online Command Mode ................................................... 21
4.4 S-registers Definitions ................................................................................................................. 21
4.4.1 S0 – AutoAnswer ............................................................................................................. 21
4.4.2 S1 – Ring Count .............................................................................................................. 22
4.4.3 S2 – Escape Code Character .......................................................................................... 22
4.4.4 S3 – Carriage Return Character ...................................................................................... 22
4.4.5 S4 – Line Feed Character ............................................................................................... 22
4.4.6 S5 – Backspace Characte r .............................................................................................. 22
4.4.7 S6 – Wait to Blind Dial ..................................................................................................... 22
4.4.8 S7 – Wait For Carrier After Dialing .................................................................................. 22
4.4.9 S8 – Pause Time For Comma ......................................................................................... 23
4.4.10 S9 – Carrier Detect Response Time ............................................................................... 23
4.4.11 S10 – Lost Carrier To Hang Up Delay ............................................................................ 23