Specifications

AT Command Set
TC3X_ATC_01_V04.00 Page 54 of 204 29.05.2002
3.22 AT+FRM Receive Data
Test command
AT+FRM=?
Response
(List of supported modulation modes <mod>s) OK
Parameter
See write command
Write command
AT+FRM=<mod
>
This command causes the TA to enter the receiver-mode using the modulation
defined below. An ERROR response code results if this command is issued while
the modem is on-hook.
Response
CONNECT
If error is related to ME functionality:
ERROR
Parameter
<mod> 96 V.29 9600 bps
72 V.29 7200 bps
48 V.27ter 4800 bps
24 V.27ter 2400 bps
Reference
TIA/EIA-578
Note
Used for Faxclass 1 only
3.23 AT+FRS Receive Silence
Write command
AT+FRS=<time>
+FRS=n causes the TA to report an OK result code to the TE after <time> 10
millisecond intervals of silence have been detected on the line. This command is
aborted if any character is received by the DTE. The modem discards the
aborting character and issues an OK result code. An ERROR response code
results if this command is issued while the mode is on-hook.
Response
OK
If error is related to ME functionality:
ERROR
Parameter
<time> 0 – 255 no. of 10 millisecond intervals
Reference
TIA/EIA-578
Note
Used for Faxclass 1 only
3.24 AT+FTH Transmit Data Using HDLC Framing
Write command
AT+FTH=<mod>
This command causes the TA to transmit data using HDLC protocol and the
modulation mode defined below. An ERROR response code results if this
command is issued while the modem is on-hook.
Response
CONNECT
Parameter
<mod> 3 V.21 Ch2 300 bps
Reference
TIA/EIA-578
Note
Used for Faxclass 1 only