Telenetics 56 - Manual (Page 170)

AT Commands
Page 162
releases the DCS message to the remote station. In Phase C, the +FDT command
resumes transmission after the end of a prior transmit data stream.
Initiate Page Transmission
Phase B DCE polled response:
[+FCSI:<remote ID string>] - if new CSI received
[+FDIS:<subparameters from remote station>] - if new DIS received
+FDCS:<T.30 subparameter string>
CONNECT
<XON> - when ready for data
After placing a call, or after finishing a document exchange, the DTE may command the
DCE to re-enter T.30 Phase B to attempt to negotiate a document transmission.
Continue a Page
CONNECT
<XON>
The DTE may issue more than one +FDT command for a given page, so that different
files may be concatenated together. These files must have the same format.
Phase C Data Framing
Phase C data must be presented to the DCE in stream mode. The DCE expects Phase C
data to follow until it detects <DLE><ETX> termination characters. The DCE will filter
the stream, as described later in this appendix.
The DCE will acknowledge the end of the data by returning the OK result code to the
DTE.
If there is data underrun before the next +FDT or +FET= command, the DCE will zero-
fill the pad as per T.4 until the Phase C timeout (+FPHCTO) is reached, or until more
data is received. The DCE appends an RTC pattern to the transmit data after an +FET=
command is received from the DTE.
Phase C Data Format
The Phase C data will be of the format specified by the negotiated T.30 DCS frame. The
+FDCS:<string> response is defined earlier in this appendix. The subparameter values
are described in Table A-23.
The DCE will use the negotiated minimum Scan Time parameter from the DCS frame,
and insert sufficient fill bits to pad each line to the minimum scan time. This is reported
in the +FDCS:ST subparameter.