At+Frm Receive Data; At+Frs Receive Silence; At+Fth Transmit Data Using Hdlc Framing - Siemens TC37 Module At Command Reference

AT Command Set

3.22 AT+FRM Receive Data

Test command Response
(List of supported modulation modes <mod>s) OK
AT+FRM=?
Parameter
See write command
Write command 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
AT+FRM=<mod
the modem is on-hook.
>
Response
CONNECT
If error is related to ME functionality:
ERROR
Parameter
<mod>
Reference Note
TIA/EIA-578 Used for Faxclass 1 only

3.23 AT+FRS Receive Silence

Write command
+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
AT+FRS=<time>
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>
Reference Note
TIA/EIA-578 Used for Faxclass 1 only

3.24 AT+FTH Transmit Data Using HDLC Framing

Write command This command causes the TA to transmit data using HDLC protocol and the
modulation mode defined below. An ERROR response code results if this
AT+FTH=<mod>
command is issued while the modem is on-hook.
Response
CONNECT
Parameter
<mod>
Reference Note
TIA/EIA-578 Used for Faxclass 1 only
TC3X_ATC_01_V04.00
96 V.29 9600 bps
72 V.29 7200 bps
48 V.27ter 4800 bps
24 V.27ter 2400 bps
0 – 255 no. of 10 millisecond intervals
3 V.21 Ch2 300 bps
Page 54 of 204 29.05.2002