Synxcom SM9234D, Руководство пользователя

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AT Commands
Page 176
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.
If the DCE finds more than one consecutive EOL in Phase C data (e.g., RTC), it
will send only one EOL
1.
Phase C data must conform to T.4 specifications.
2.
The DTE need not include a final RTC, since the DCE will append an RTC in
response to an FET= command.
3.
Some facsimile machines may treat two EOLs as an RTC.
<CAN> - Escape from Transmission
The DCE may request the DTE to halt Phase C transmission, by sending a cancel
<CAN> character (024) to the DTE. In this case, the DTE should terminate Phase
C transmission, issue <CAN>, and wait for the OK response code from the DCE.
Table A-23. T.30 Session Subparameter Codes
Label Function
Valu
e Description
VR Vertical Resolution 0 Normal, 98 lpi
1 Fine, 196 lpi
BR Bit Rate (See Note
1) +FDCS (originate) +FDIS (answer)
0 2400 bps/V.27 ter V.27 ter (2400 only)
1 4800 bps/V.27 ter V.27 ter
2 7200 bps/V.29 V.29, V.27 ter
3 9600 bps /V.29 or
V.17 V.29, V.27 ter