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AT Command Set Summary
266 Perle 833IS User Guide
S86 - Call Failure
Reason Code
When the modem issues a NO CARRIER result code, a value is written to this S-
Register to help determine the reason for the failed connection. S86 records the first
event that contributes to a NO CARRIER message. The cause codes are:
Range: 0, 4, 5, 9, 12, 13, or 14
Default:
S86=0 Normal disconnect, no error occurred.
S86=4 Loss of carrier.
S86=5 V.42 negotiation failed to detect an error-correction modem at the other
end.
S86=9 The modems could not find a common protocol.
S86=12 Normal disconnect initiated by the remote modem.
S86=13 Remote modem does not respond after 10 re-transmissions of the same
message.
S86=14 Protocol violation.
AT Command Set Summary
Basic AT
Commands
Command Function
A/ Re-execute command.
A Go off-hook and attempt to answer a call.
B0 Select V.22 connection at 1200 bps.
B1 Select Bell 212A connection at 1200 bps.
C1 Return OK message.
Dn Dial modifier.
E0 Turn off command echo.
E1 Turn on command echo.
F0 Select auto-detect mode (equivalent to N1). (RC144)
F1 Select V.21 or Bell 103. (RC144)
F2 Reserved. (RC144)
F3 Select V.23 line modulation. (RC144)
F4 Select V.22 or Bell 212A 1200 bps line speed. (RC144)
F5 Select V.22 bis line modulation. (RC144)
F6 Select V.32 bis or V.32 4800 line modulation. (RC144)
F7 Select V.32 bis 7200 line modulation. (RC144)
F8 Select V.32 bis or V.32 9600 line modulation. (RC144)