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+FRS=n - Receive Silence
+FRS=n causes the modem to report back to the DTE with an OK result code after n 10 ms-
intervals of silence have been detected on the line. This command is aborted if any character is
received from 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 modem is on-hook.
+FTM=n - Transmit Data
+FTM=n causes the modem to transmit data using the modulation defined below. An ERROR
response code results if this command is issued while The modem is on-hook.
Parameters: See Command options
Command options:
+FTM=xxx where xxx is chosen from Fax Modulation Table on page 52
+FRM=n - Receive Data
+FRM=n causes the modem 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.
Parameters: See Command options
Command options:
+FRM=xxx where xxx is chosen from Fax Modulation Table on page 52
+FTH=n - Transmit Data with HDLC Framing
+FTH=n causes the modem to transmit data using HDLC protocol and the modulation defined
below. An ERROR response code results if this command is issued while the modem is on-hook.
Parameters: See Command options.
Command options:
+FTH=xxx where xxx is chosen from Fax Modulation Table on page 52
+FRH=n - Receive Data with HDLC Framing
+FRH=n causes the modem to receive frames using HDLC protocol and the modulation defined
below. An ERROR response code results if this command is issued while the modem is on-hook.
Parameters: See Command options.
Command options:
+FRH=xxx where xxx is chosen from Fax Modulation Table on page 52
Note:
"For information concerning operation, installation or service, please call at (800)-
HITACHI Service contact address is as below.
HITACHI Home Electronics (America),Inc.
3890 Steve Reynolds Blvd. Norcross, Georgia 30093" .