Longshine LCS-8056C2 - Manual (Page 124)

Commands for Host-Processed Modems Reference Manual
4-14 Conexant 100498E
+FCL - Carrier Loss Timeout
This parameter allows the DTE to select the modem’s loss-of-carrier delay between initial
loss-of-carrier and qualified loss-of-carrier, when the modem will give up and exit a receive
mode. Intermediate (less than FCL timeout) loss-of-carrier should be indicated by insertion of
the SQ-BAD signal quality indicator in the received data stream.
In unframed receive modes, if the modem detects RTC as described in Recommendation T.30
prior to initial loss of the high speed carrier, or if the modem detects V.21 carrier after initial
loss of high speed carrier, then the modem immediately accepts the loss-of-carrier as
qualified, without waiting for the FCL timer to expire.
In HDLC receive modes, if the modem detects HDLC abort prior to initial loss of the high
speed carrier, or if the modem detects V.21 carrier after initial loss of high speed carrier, then
the modem l immediately accepts the loss-of-carrier as qualified, without waiting for the FCL
timer to expire.
Write Syntax
+FCL=<time>
Defined Values
<value> Decimal number representing the loss-of-carrier delay time in units
of 100 ms. The range is 0 - 255.
Reporting Current or Selected Values
Command: +FCL?
Response: +FCL: <time>
Example: +FCS: 0 For the default setting.
Reporting Supported Range of Parameter Values
Command: +FCL=?
Response: +FCL: ( <time> range)
Example: +FCL: (0-255)