V.8/V.34 Protocol - Ricoh FAX2000L Service Manual

SYSTEM FEATURES

2.3.6 V.8/V.34 PROTOCOL

Please refer to the V.8/V.34 Training Manual for overall information about V.8/V.34
protocol.
This section explains only functions that are specific to this machine.
Data Rate Change Procedure
Shift-down Request from Receiving Terminal
• N
is the number of frame re-transmissions until the TX terminal sends DCN to
eor
terminate the communication. This number is fixed at "9", and is not adjustable.
If this machine has sent two PPRs for one ECM block, it will request one step shift-
down to the sender terminal in the next control channel.
TX
6619NESV
Fax data
4VW#EORFN
P P S - N U L L
6619NESV
Fax data
P P S - N U L L
6619NESV
Fax data
P P S - N U L L
M P h
6415NESV
Fax data
5QG#EORFN
P P S - M P S
6415NESV
Fax data
5QG#SDJH
P P S - E O P
D C N
2-36
N
RX
eor
9 (default)
8
P P R
P P R 7
6KLIW0GRZQ
UHTXHVW
M P h
M C F 9
M C F 9
M C F 9
H551D505.WMF
30 November, 1999