HP 262SA Reference Manual page 343

3276/78 Emulation Mode
Table F-3. Bell 208A Options, Point-to-Point Line
Type of Modem: Bell System Type 208A Data Set (also called DATAPHONE
4800).
I'ype of Line: Private Leased Line.
I'ransmission Rate: 4800 Bits-per-second.
OPTION DESCRIPTION
RECOMMENDATION
NUMBER
Al Transmitter internally timed
Al (required)
A2 Transmitter externally timed
B3 Continuous carrier B3
B4 Switched carrier
C5 Switched REQUEST TO SEND
C6
Continous REQUEST TO SEND C6
D7 One-second holdover used D7
D8
One-second holdover not used
E9 With new sync
EIO Without new sync EIO
FI1
CC ON when analog loop is FII
present
FI2 CC OFF when analog loop is
present
F-9