Telenetics 56 User Manual
Page 155
AT Commands
Page 147
Service Class 1 Parameters
+FAR - Adaptive Reception Control
If Adaptive Reception is enabled, the modem adaptively detects the selected message
carrier or V.21 control messages. If the expected carrier is detected, the modem operates
as specified in the respective FRM= mo or FRH= mo commands. If V.21 flag
preamble is detected instead, the modem issues a FRH:3 intermediate result code, and
then executes an implied FRH=3 command.
Write Syntax
FAR= value
Defined Values
0 Disable Adaptive Reception. (Default.)
1 Enable Adaptive Reception.
Reporting Current or Selected Values
Command:
FAR?
Response:
FAR: value
Example:
+FAR: 0
For the default setting.
Reporting Supported Range of Parameter Values
Command:
FAR?
Response:
+FAR: (
Example: +FAR:
(0,1)
+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= tim
Defined Values
0 Disable Adaptive Reception. (Default.)
1 Enable Adaptive Reception.
Reporting Current or Selected Values
Command: +FCL?
Response: +FCL:
tim