Oki OKIOFFICE84 Maintenance Manual page 22

Table 1.5.1 (7/10) Basic Performance Specifications
No. Item
22 Minimum scan line time for receiv-
ing
23 Coding scheme
24 MODEM
1) High-speed Modem
2) Low-speed Modem
25 Fallback
Fallback
rank
1st
2nd
3rd
4th
5th
6th
26 Protocol
0 ms, when receiving in ECM mode or from an Oki Data
facsimile.
5 ms at 15.4 line/mm or 7.7 line/mm and 10 ms at 3.85 line/mm
when receiving from a non-Oki Data facsimile or non-ECM
mode.
1) One-dimensional coding scheme:
Modified Huffman (MH)
2) Two-dimensional coding scheme:
Modified READ (MR)
Modified modified READ (MMR)
a) ITU-T Rec. V.29 (9600/7200 bps)
b) ITU-T Rec. V.27 ter (4800/2400 bps)
c) ITU-T Rec. V.17 (14400/12000/9600/7200 bps)
ITU-T Rec. V.21 channel 2 (300 bps)
Automatic fallback will occur according to the following se-
quence by FTT, RTN or PPR.
Transmission Activated by
speed FTT (Times)
14400 bps 1
12000 bps 1
9600 bps 1
1
7200 bps
2
4800 bps
2
2400 bps
When the last trial fails, the transmitting station sends out a
DCN signal to the remote station for disconnection.
Note 1: Continuous PPRs for the same partial page within
1) ITU-T Rec. T.30
2) Oki Data special protocol
High-speed protocol
The T.30 protocol signal from the transmitting station is
sent at message transmission speed instead of 300 bps.
(This function is disable when the H/Modem rate is set to
9.6 kbit/s by TS No.13)
1 - 15
Specifications
Activated by Activated by
RTN (Times) PPR (Times)
1
4 (Note 1)
1 4 (Note 1)
1
4 (Note 1)
1
4 (Note 1)
1
4 (Note 1)
1 4 (Note 1)
each fallback rank.
Protocol
ITU-T V.17 (V.17)
ITU-T V.17 (V.17)
ITU-T V.17 (V.29)
ITU-T V.17 (V.29)
ITU-T V.27 ter.
ITU-T V.27 ter.
40672201TH Rev. 4