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Chapter 5 – AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 56
+ES=6,,8 Enable V.80 Synchronous Access Mode.
+ES=3 Enable V.42 with Detection Phase originator. Disable V.80
Synchronous Access Mode originator.
+ES=,,2 Allow LAPM, MNP, or Normal Mode connection answerer.
Disable V.80 Synchronous Access Mode answerer.
+ES=3,,2 Enable V.42 with Detection Phase originator, allow LAPM,
MNP, or Normal Mode connection answer. Disable
Synchronous Access Mode originator and answerer.
Report Commands: +ES? Reports the current values
Response: +ES: <orig_rqst>,<orig_fbk>,<ans_fbk>
Example: +ES: 3,0,2 For the default setting.
+ES=? Reports supported range of parameter values
Response: +ES: (<orig_rqst> range),( <orig_fbk> range),
(<ans_fbk> range)
Example: +ES: (0-4,6,7),(0-4),(0-6,8,9)
Command: +EB Break Handling in Error Control Operation
Description: This extended-format compound parameter controls the break handling in
V.42 operation. It accepts three numeric subparameters:
Default: None
Defined Values: <break_selection> Decimal number 0 specifying that break is to be
ignored, i.e., not signaled to remote DCE.
<timed> Decimal number 0 specifying that any transmitted
V.42 L-SIGNAL will not indicate break signal length
<default_length> Decimal number 0 specifying that
break is not delivered to the DTE.
Report Commands: +EB? Reports current or selected values
Response: +EB:
<break_selection>,<timed>,<default_length><CR>
Example: +EB: 0,0,0 For default settings.
+EB=? Reports supported range of parameter values
Response: +EB: (<break_selection> range),(<timed> range),
(default_length> range)
Example: +EB: (0),(0),(0)
Command: +ESR Selective Repeat
Description: This extended-format numeric parameter controls the use of the selective
repeat (SREJ) option in V.42.
Decimal number 0 specifying that SREJ is not used.
Report Commands: +ESR? Reports Current or Selected Values:
Response: +ESR: <value>
Example: +ESR: 0 For default setting
+ESR=? Reports Supported Range of Parameter Values
Response: +ESR: (<value>)
Example: +ESR: (0)
Command: +EFCS 32-bit Frame Check Sequence
Description: This extended-format numeric parameter controls the use of the 16-bit or
32-bit frame check sequence (FCS) option in V.42.
Defined Values: <value> Decimal number 0 specifying the use of the 16-bit FCS specified
in V.42.
Report Commands: +EFCS? Current or Selected Values:
Response: +EFCS: <value>
Example: +EFCS: 0 For default setting.
+EFCS=? Reporting Supported Range of Parameter Values
Response: +EFCS: (<value> range)
Example: +EFCS: (0)