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Service Guide OF1000
Chapter 1 Product Specifications
1.3 COMMUNICATIONS
1.3.01 Telephone Line Compatibility
· PSTN (public switched telephone network)
· PBX (private branch exchange)
1.3.02 Communication Mode
· Half Duplex
1.3.03 Protocol
· CCITT Recommendation T.30
· Oki Special Protocol
In multi-document reception, the local unit can start transmitting
the modem training bits immediately after transmitting end of
message (EOM) and upon reception of message confirmation (MCF)
from the remote unit, instead of repeating all procedures (which takes
about six seconds).
· Oki Special High Speed
The T.30 handshake is conducted at message transmission speed
(instead of 300 bps) during multi-page transmission.
1.3.04 Line Interface
· Impedance
600 ohms balanced
· Send Power Level
0 dbm to -15 dbm (can be adjusted in 1 dbm steps by modifying TF #21)
1.3.05 Ring Signal Detection Sensitivity
· Voltage Range
25 to 150 r.m.s.
· Frequency Range
15 to 68 Hz (with 44 to 56 volts superimposed)
· Ring Signal Detection Time
One Ring Signal
or
Adjustable between 5 and 30 seconds, in 5 second increments
Refer to User Function 24 (optional second tray installed)
Refer to User Function 23 (optional second tray NOT installed)
· Ring Signal Voltage Duration
Longer than 180 milliseconds (inoperative if duration is
90 milliseconds or less)
1.3.06 Coding Schemes
· Modified Huffman (MH) Only
· Modified-Modified Read (MMR)
· Modified Huffman (MH)
Содержание OF1000
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