Tainet T-288C, User Manual

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AUXILIARY SUMMARY FOR FAX FUNCTION A3-1
APPENDIX 3: AUXILIARY SUMMARY FOR FAX FUNCTION
The DTE-facsimile DCE communications link shall provide full duplex character data
at rates fast enough to accommodate the transfer of synchronous T.30 Phase C data.
12,000 bit/s is the minimum rate needed to support 9600 bit/s V.29 Phase C data.
19,200 bit/s is sufficient to support V.29 signaling at 9600 bit/s. With flow control, it
is not necessary, and not recommended, to change the DTE-DCE communications
link data rate during facsimile operation.
Flow control is necessary to match the DTE-DCE data rate to the line signaling rate
and to the requirements of Group 3 data transmission. (For example, provision must
be made for minimum scan line times.) In band unidirectional DC1/DC3 (XON/XOFF)
flow control is mandatory; flow control using V.24 circuits 106 and 105 is optional. In
the verbose format, result code responses are preceded by the ASCII characters
<CR><LF>, and followed by <CR><LF>.In the non-verbose format ,result code
responses are preceded by no characters, and followed by a single <CR>.
The ASCII <DLE> character (hex $10) is used as a special character, to shield special
characters. The <DLE><ETX> character pair (hex $10, hex $03) is used to mark the
end of a stream. The following patterns are used:
any data <DLE> <ETX> end of stream
any data <DLE> <DLE>... single $10 in data stream
any data <DLE> <not DLE or ETX> delete both <DLE> & next character