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Chapter 16 – Extended AT Commands in IS707.3
Multi-Tech Systems, Inc. CDMA AT Commands Reference Guide (PN S000294K) 109
Error Control Operation +EB
Description: This command is used for break handling in error control operations. The extended-format compound
parameter is used to control the manner of V.42 operation on the PSTN line (if present in IWF). The
command is not relevant for packet service.
Values: <Break_selection>
0 Ignore break (do not signal to remote DCE)
1 Non-expedited, non-destructive
2 Expedited, non-destructive
3 Expedited and destructive
<timed>
0 Any transmitted V.42 L-SIGNAL shall not indicate break signal length
1 Any transmitted V.42 L-SIGNAL shall indicate break signal length
<default_length>
0 Do not deliver break to DTE
1-254 Default break length of .01 to 2.54 seconds
Syntax: Command syntax: AT+EB=[<Break_selection>[,<timed>[,<default_length>]]]
Command Possible Responses
AT+EB?
Note: Display the current setting.
+EB: 1,0,30
OK
Note: This is the default setting
AT+EB=2
Note: Set value to 2.
OK
Note: Command is valid
Numeric Parameter Control +EFCS
Description: The extended-format numeric parameter is used to control the use of 32-bit frame check sequence option in
V.42 on the PSTN link (if present in IWF). The command is not relevant for packet service.
Values: <Val>
0 Use 16-bit FCS
1 Use 32-bit FCS if available in remote DCE; otherwise use 16-bit FCS
2 Use 32-bit FCS if available in remote DCE; otherwise disconnect
Syntax: Command syntax: AT+EFCS=[<Val>]
Command Possible Responses
AT+EFCS?
Note: Display the current setting.
+EFCS: 0
OK
Note: Command is valid
AT+EFCS=2
Note: Set value to 2.
OK
Note: Command is valid
Error Control Report +ER
Description: The extended-format numeric parameter is used to control whether the extended-format +ER intermediate
result code is transmitted from the IWF over the interface.
Values: <Val>
0 Error control reporting disabled
1 Error control reporting enabled
Syntax: Command syntax: AT+ER=[<Val>]
Command Possible Responses
AT+ER?
Note: Display the current setting.
+ER: 0
OK
Note: Command is valid
AT+ER=1
Note: Set value to 1.
OK
Note: Command is valid
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