Oki OKIFAX4550 Maintenance Manual page 23

No. Item
26 Protocol
27 Transmission time
28 Error correction scheme
29 Communication mode
30 Ringing signal detection sensitivity
1) Voltage range
2) Frequency range
3) Ring response time
31 Image memory
34 Overheat protection
41309401TH Rev.4
Table 1.1 (8/11) Basic Performance Specifications
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 TF No.13)
Note : In Hihg-speed protocol, V.34 is not applied.
3) ITU-T G4 class 1 (option)
3 sec.(approx 3.2 sec) /ITU-T No. 1 evalution test chart
Note: This is Phase C time at 3.85 line/mm and 33600 bps
ITU-T ECM defined in T4, T30 are providrd.
This should be applicable to MH, MR and MMR coding
schemes.
Half-duplex
25 to 150 V r.m.s.
Inoperative below 10 V
Note: This range may differ by the requirement of PTT.
20 to 68 Hz
Note: This range may differ by the requirement of PTT.
One-ringing signal or 5 to 30 seconds.
(Selectable in 5 sec. steps. F + OT9 + ← + 11)
Note: ITU-T No.1 sample document is used to count the
Note: OKIFAX4550/OKIOFFICE87 does not back up the
The heater of the fuser unit is controlled within the predeter-
mined temperature range by the thermistor. If the temperature
of the heater exceeds the range, the LCD displays "PRINTER
ALARM 4".
Furthermore, the built-in thermostat in the fuser unit prevents
the heater from being overheated even in the event of the
failures in the above temperature control circuit.
Specifications
for 3 sec. in MMR code transmission.
Sender ID is not added to the sending data.
Memory
[pages]
condition
Standard
160
(2M-byte)
number of sheets. (MMR/STD/Sender ID : off)
message received in memory for the power failure.
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