Reference Information

 

 

 

Modem Reference Information

 

 

 

 

 

 

 

Conexant AT Commands (Advanced Users Only)

 

 

 

 

 

Command

Function (Conexant)

 

 

 

 

 

+ESA=a,b,c,d,e,

Controls operation of synchronous access mode:

 

f,g,h

a=0 specifies in transparent sub-mode, modem transmits 8-bit SYN sequence on idle.

 

 

b=0 specified in framed sub-mode, modem transmits HDLC flags on idle (default and fixed).

 

 

c=0 specifies in framed sub-mode, modem transmits abort on underrun in middle of frame

 

 

(default); c=1 specifies in framed sub-mode, modem transmits flag on underrun in middle of

 

 

frame, notifies DTE.

 

 

d: not to be commanded.

 

 

e=0 specifies CRC generation and checking disabled (default and fixed).

 

 

f=0 specifies NZRI encoding and decoding disabled (default and fixed).

 

 

g=255 sets the octet value used in character-oriented framing.

 

 

h: not to be commanded.

 

+GCAP

Transmit text listing commands that provide additional modem capabilities.

 

+GCI=n

Set country of installation using 8-bit country code from Annex A of T.35.

 

+GMI

Report modem manufacturer.

 

+GMM

Report modem model.

 

+GMR

Report modem version, revision, or date.

 

+GOI

Transmit text identifying the device.

 

+GSN

Report modem model serial number.

 

+IFC=n,m

Set operation of local flow control between DTE and modem.

 

 

n =method DTE uses to control data flow from modem: 0=none, 1=XON/XOFF on transmitted

 

 

data, 2=Circuit 133 (Ready for Receiving) (default).

 

 

m =method modem uses to control data flow from DTE: 0=none, 1=XON/XOFF on received

 

 

data, 2=CTS/RTS (default).

 

+ILRR=n

Report local port rate: 0=disable, 1=enable.

 

+IPR=n

Set data rate at which the modem accepts commands when connected: 0 (allows operation

 

 

only at rates automatically detectable by modem), 2400, 4800, 9600, 19200, 38400, 57600, or

 

 

115200.

 

+ITF=a,b,c

Sets transmit flow control thresholds (b and c are optional):

 

 

a (20 to 7000) sets threshold (octets) above which modem generates flow-off signal in

 

 

synchronous access mode (default=128).

 

 

b (10 to 5000) sets threshold (octets) below which modem generates flow-on signal in

 

 

synchronous access mode (default=64).

 

 

c=0 (fixed).

 

+PCW=n

Set modem behavior with call waiting: 1=request modem-on-hold and collect caller ID

 

 

information, 2=hang up, 3=ignore call waiting.

 

+PIG=n

0=enable PCM upstream negotiation, 1=disable (default).

 

+PMH=n

Set modem-on-hold: 0=enabled in V.92 mode (default), 1=disabled.

 

+PMHF

Initiate flash hook sequence when in modem-on-hold procedure.

 

+PMHR=n

Request modem to initiate or confirm modem-on-hold (MOH) procedure and timeout: 0=V.92

 

 

modem-on-hold request denied or unavailable, 1 to 13 grant MOH with timeout (1=10 sec,

 

 

2=20 sec, 3=30 sec, 4=40 sec, 5=1 min, 6=2 min, 7=3 min, 8=4 min, 9=6 min, 10=8 min, 11=12

 

 

min, 12=16 min, 13=indefinite).

 

+PMHT=n

Set whether modem grants modem-on-hold (MOH) request, and MOH timeout: 0=deny V.92

 

 

modem-on-hold request (default), 1 to 13=grant MOH with timeout (1=10 sec, 2=20 sec, 3=30

 

 

sec, 4=40 sec, 5=1 min, 6=2 min, 7=3 min, 8=4 min, 9=6 min, 10=8 min, 11=12 min, 12=16

 

 

min, 13=indefinite).

 

+PQC=n

Use Short Phase startup procedures: 0=enable V.92 Short Phase 1 and 2 (default), 1=enable

 

 

Short Phase 1 only, 3=disable.

 

+PSS=n

0=modems decide whether to use short startup procedures, 2=use full startup procedures on

 

 

all subsequent connections.

 

+VCID=n

Set caller ID reporting: 0=disable (default), 1=enable with formatted presentation, 2=enable

 

 

with unformatted presentation.

 

 

 

 

 

 

 

 

 

92 Reference Guide