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AT Command Reference Manual
1048 6-13
6.4 SERVICE CLASS 2 DCE RESPONSES
The DCE sends information responses to the DTE as a facsimile session proceeds. They indicate the state of the facsimile
session and convey needed information. These messages are solicited messages generated in execution of DTE action
commands described in Section 6.3.
The DCE precedes and follows the information responses with <CR><LF>.
The DCE provides the on-line status of several session parameters when they are available during T.30 handshaking. These
include the remote ID string and the DIS/DCS parameters. These responses report the T.30 session parameter frames. The
subparameters are described in Table 6-2.
6.4.1 +FCON, Facsimile Connection Response
+FCON indicates connection with a fax machine. It is released by detection of HDLC flags in the first received frame.
+FCON is generated in response to an Originate or Answer command.
6.4.2 +FDCS:, Report Current Session Capabilities
Syntax: +FDCS:VR,BR,WD,LN,DF,EC,BF,ST
+FDCS:<string> reports the negotiated parameters. Phase C data will be formatted as described by the subparameters. This
message may be generated in execution of +FDT or +FDR commands before the CONNECT result code if new DCS frames
are generated or received. (See Table 6-2.)
6.4.3 +FDIS:, Report Remote Station Capabilities
Syntax: +FDIS:VR,BR,WD,LN,DF,EC,BF,ST
+FDIS:<string> reports remote facsimile station capabilities and intentions. The parameters are provided in ASCII notation.
(See Table 6-2.)
This message is generated in execution of Originate, Answer, +FDT, or +FDR commands.
6.4.4 +FCFR, Indicate Confirmation to Receive
Syntax: +FCFR
The DCE sends a +FCFR response to the DTE upon reception of an acceptable TCF training burst and a valid DCS signal
from the remote machine. This indicates that the DCE will receive Phase C data after the remote station receives the local
DCE's CFR message. The +FCFR message is generated in execution of a +FDR command.
6.4.5 +FTSI:, Report the Transmit Station ID
Syntax: +FTSI: “<TSI ID string>” Transmit Station ID
This response reports the received transmit station ID string, if any. This message is generated in execution of Originate,
Answer, +FDT, or +FDR commands.
6.4.6 +FCSI:, Report the Called Station ID
Syntax: +FCSI: “<CSI ID string>” Called Station ID
This response reports the received called station ID string, if any. This message is generated in execution of Originate,
Answer, +FDT, or +FDR commands.