AT Cmd
Function
Mode
Value
Setting
13
V.PCM Only
14
V.PCM Auto
*TD
Dial TX Level
DFV
0 - 15
TX Level 0 through -15 (default -9)
+A8E
V.8 Origination Negotiation
DFV
0
Disable
1
Enable DCE-controlled V.8 orig neg
6
Enable DCE-controlled V.8 orig neg, use +A8x indications
V.8 Answer Negotiation
DFV
0
Disable
1
Enable DCE-controlled V.8 ans neg
5
Enable DCE-controlled V.8 ans neg, issue +A8x indications
V.8 CI Signal Call Function
DFV
00h - FFh
Default is 00h
V.8bis Control
DFV
0
Disabled
1
Enabled - DCE controlled
2
Enabled - DTE controlled
+A8T
V.8bis Tx Signal
DFV
0
None
1
Initiating MRe
2
Initiating MRd
3
Initiating Cre, low power
4
Initiating Cre, high power
5
Initiating CRd
6
Initiating ESi
7
Responding MRd, low power
8
Responding MRd, high power
9
Responding CRd
10
Responding ESr
V.8bis Tx Message 1
DFV
x
Hexadecimal octet coded string
V.8bis Tx Message 2
DFV
x
Hexadecimal octet coded string
V.8bis Signal Detection
DFV
0
Enable detection of initiating V.8bis signals
1
Enable detection of responding V.8bis signals
2
Enable detection of both V.8bis signals
V.8bis Message Detection
DFV
0
Disable detection of V.8bis messages
1
Enable detection of V.8bis messages
V.8bis Message Delay
DFV
0
No delay between tx V.8bis signal and message
1
1.5 second delay between tx V.8bis signal and message
+DR
Data Compression Reporting
DFV
0
Disabled
1
Enabled
+DS
Data Compression Direction
DFV
0
No Compression
1
Tx Only
2
Rx Only
3
Both Direction, Accept any direction
Data Compression Negotiation
DFV
0
Do not disc if V.42bis not negotiated as per Direction
1
Disconnect if V.42bis not negotiated as per Direction
Maximum Dictionary Size
DFV
512 - 65535
Default is 2048
Maximum String Size
DFV
6 - 250
Default is 32
+EB
Break Selection
DFV
0
Ignore
1
Non-Expedited and Non-Destructive
2
Expedited and Non-Destructive
3
Expedited and Destructive
Timed
DFV
0
Transmission of L-SIGNAL shall not indicate length
1
Transmission of L-SIGNAL shall indicate length
Default Length
DFV
0
Do not deliver break to DTE
1 - 254
Break length in .01 seconds (Default is 100)
Summary of Contents for SM56
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