General Information
1 - 15
OKIOFFICE 44
Service Manual, P/N 59276801
Automatic fallback will occur according to the following sequence
by FTT, RTN or PPR.
When the last trial fails, the transmitting station sends out a DCN
signal to the remote station for disconnection.
Note:
Continuous PPRs for the same partial page within each
fallback rank.
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.
Note:
In high-speed protocol, 28.8 K-bps are not supported.
6 sec. /ITU-T No. 1 sample document
Note:
This is Phase C time at 3.85 line/mm and 14400 bps for 6
sec. in MMR code transmission.
ITU-T Error correction mode (ECM)
Oki Data ITU-T ECM
Half-duplex
25 to 150 V r.m.s.
Inoperative below 10 V
20 to 68 Hz
One-ringing signal or 5 to 30 seconds.
(Selectable in 5 sec. steps. F + OT9 +
←
+ 11)
25
Fallback
26
Protocol
27
Transmission time
28
Error correction
29
Communication mode
30
Ringing signal detection sensitivity
1)
Voltage range
2)
Frequency range
3)
Ring response time
Table 1.5.1 (7/11) Basic Performance Specifications
No.
Item
Specifications
Fallback
rank
1st
2nd
3rd
4th
5th
6th
Transmission
speed
14400 bps
12000 bps
9600 bps
7200 bps
4800 bps
2400 bps
Activated by
FTT (Times)
1
1
1
1
2
2
Activated by
RTN (Times)
1
1
1
1
1
1
Activated by
PPR (Times)
4 (Note 1)
4 (Note 1)
4 (Note 1)
4 (Note 1)
4 (Note 1)
4 (Note 1)
Protocol
ITU-T V.17 (V.33)
ITU-T V.17 (V.33)
ITU-T V.17 (V.29)
ITU-T V.17 (V.29)
ITU-T V.27 ter.
ITU-T V.27 ter.
Summary of Contents for OKIOFFICE 44
Page 2: ...All specifications are subject to change without notice Service Manual OKIOFFICE 44 59276801...
Page 135: ...Disassembly 4 6 OKIOFFICE 44 Service Manual P N 59276801 Whole Unit Picture FX048 CP4 1 Fig 01...
Page 329: ...Illustrated Parts List D 6 OKIOFFICE 44 Service Manual P N 59276801 Section 2 Printer Unit...
Page 331: ...Illustrated Parts List D 8 OKIOFFICE 44 Service Manual P N 59276801 Section 3 Operator Panel...
Page 351: ...Illustrated Parts List D 28 OKIOFFICE 44 Service Manual P N 59276801 Section 12 Cables...
Page 357: ...Board Layout E 2 OKIOFFICE 44 Service Manual P N 59276801 MEM eps E 2 MEM PCB...
Page 358: ...Board Layout E 3 OKIOFFICE 44 Service Manual P N 59276801 TEL U eps E 3 TEL U PCB...
Page 359: ...Board Layout E 4 OKIOFFICE 44 Service Manual P N 59276801 Hook eps E 4 Hook PCB...
Page 388: ...OKIOFFICE 44 Service Manual Part Number 59276801 Printed in the USA...