Chapter 16 – Extended AT Commands in IS707.3
Multi-Tech Systems, Inc. CDMA Wireless AT Commands (PN S000294J)
110
Error Control Selection +ES
Description:
The extended-format compound parameter is used to control the manner of operation of the V.42 protocol
on the PSTN link (if present in IWF). The command is not relevant for packet service.
Values:
<orig_rqst>
0
Direct mode
2
Initiate V.42 Detection Phase
3
Initiate Alternative Protocol
<orig_fbk>
0
Error control optional; If error control not established maintain DTE-DCE data rate
1
Error control optional; If error control not established change DTE-DCE data rate to match line rate
2
Error control required; If error control not established, disconnect
3
Error control required (only LAPM acceptable); If error control not established, disconnect
4
Error control required (only alternative protocol acceptable); If error control not established,
disconnect
<ans_fbk>
0
Direct mode
1
Error control disabled, use Buffered mode
2
Error control optional; If error control not established maintain DTE-DCE data rate
3
Error control optional; If error control not established change DTE-DCE data rate to match line rate
4
Error control required; If error control not established, disconnect
5
Error control required (only LAPM acceptable); If error control not established, disconnect
6
Error control required (only alternative protocol acceptable); If error control not established,
disconnect
Syntax:
Command syntax:
AT+ES=[<orig_rqst>[,<orig_fbk>[,<ans_fbk>]]]
Command
Possible Responses
AT+ES?
Note: Display the current setting.
+ES: 3, 0, 2
OK
Note: Command is valid
AT+ES=1
Note: Set value to 1.
OK
Note: Command is valid
AT+ES?
Note: Display the setting after change.
+ES: 1, 0, 2
OK
Note: Command is valid
Error Control Selective Repeat +ESR
Description:
The extended-format numeric parameter is used to control the use of selective repeat (SREJ) option in V.42
on the PSTN link (if present in IWF). The command is not relevant for packet service.
Values:
<Val>
0
Do not use SREJ
1
Use SREJ if available in remote DCE; continue without it if not
2
Use SREJ if available in remote DCE; disconnect if SREJ is not available
Syntax:
Command syntax:
AT+ESR=[<Val>]
Command
Possible Responses
AT+ESR?
Note: Display the current setting.
+ESR: 0
OK
Note: Command is valid
AT+ESR=1
Note: Set value to 1.
OK
Note: Command is valid