Specifications

Chapter 3 – Fax Class 2 Commands
Multi-Tech Systems, Inc. SocketModem MT5600SMI/MT5656SMI Reference Guide (S000306B) 86
Phase C Data Framing
Phase C data may be presented to the DTE in stream mode. The DCE will transfer a stream of data to
the DTE, followed by the <DLE><ETX> stream termination characters.
The DCE will filter the stream as described in Voice Commands -- <DLE> Shielded Codes Sent to the
Modem (DCE).
Phase C Data Format
The received data format is negotiated under T.30 reported by the +FDCS:VR,BR,WD,LN,DF,EC,BF,ST
response.
The DCE will delete the terminating RTC (6 EOLs) patterns.
<CAN> - Escape from Reception
From the +FDR command until the end of Phase D Date, the DCE is in a data transfer state, and will not
respond to DTE command characters. The DCE will respond to three ASCII control characters: <DC1>
(017) and <DC3> (019) flow control characters, and cancel <CAN> (024).
Upon receipt of the <CAN> character, the DCE will terminate the reporting of received data by sending
trailing <DLE><ETX> characters to the DTE, and will then execute an implied +FK command in order to
conduct an orderly disconnection.
Command: +FK Session Termination
Description: The +FK command causes the DCE to terminate the session in an orderly
manner. In particular, the DCE will send a DCN message at the next
opportunity and hang up. At the end of the termination process, the DCE will
report the +FHNG response with result code.
This operation can be invoked by using the cancel <CAN> character during
Phase C data reception (see prior section).
The DCE will wait until the current page completes, unless the reception is of
unlimited length; in that case, the DCE may halt reception and terminate the
session at any time.
Syntax: +FK
Command: +FCIG Set Polling ID
Description: This command allows setting the Local Polling ID string used in a CIG frame.
The syntax of this command is identical to +FLID.
Write syntax: +FCIG="<local ID string>"
Valid value: 20-character ASCII string
Default value: Empty
Command: +FLPL Indicate a Document for Polling
Description: This command allows setting up an answering modem to know that it has a
document available for polling. This allows a calling modem to receive this fax
from the answerer.
Syntax: AT+FLPL=?
0,1
OK
AT+FLPL=1
OK
AT+FLPL?
1