MC55_ATC_V04.00 Page 324 of 475 3/17/06
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12.22 AT+FRH Receive Data Using HDLC Framing
The AT+FRH command enables the TA to receive frames using the HDLC protocol and the modulation schemes
defined in Section 12.1, FAX parameters. An ERROR response code results if the command is issued while the
modem is on-hook. The test command can be used in off-hook mode to check the modulation schemes sup-
ported by MC55.
Syntax
Note
• Used for Fax Class 1 only.
Test Command
AT+FRH=?
Response(s)
In off-hook mode only:
+FRH:(list of <mod>s)
OK
In on-hook mode:
ERROR
Write Command
AT+FRH=<mod>
Response(s)
CONNECT
If error is related to ME functionality
ERROR
Reference(s) PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge  Last
TIA/EIA-578 ! % ! % ! ! ! ! !
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