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3276/78 Emulation Mode
The following tables show the various modem strapping requirements.
Table F-I. Bell 20IC Options, Point-to-Point Line
Type of Modem:
Bell System Type 20IC Data Set (also called DATAPHONE
2400).
Type of Line:
Private Leased Line.
Transmission Rate:
2400 Bits-per-second.
OPTION
DESCRIPTION
RECOMMENDATION
NUMBER
Al
EIA interface
Al (required)
A2
Contact interface
B3
Alternate voice
Customer defined
B4
Without Alternate voice
C5
With new synch
C6
Without new synch
C6 (Host computer
and HP 2625A)
D7
2-wire circuit
D8
4-wire circuit
D8 (required)
E9
4-wire private line
E9 (Host computer
continuous carrier
and HP 2625A) "-
0-millisecond delay
EIO
4-wire private line
switched carrier
Transmitter internally timed
Internal (required)
Transmitter externally timed
F-7
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