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Dial Options/V.25 Options
Configuring the ISU 512e for HDLC (M
dialing over a DTE interface using standard synchronous
HDLC V.25 bis commands with Mark Idle. Configuring the
ISU 512e for HDLC (F
DTE interface using standard synchronous HDLC V.25 bis
commands with 7E HEX idle.
The ISU 512e supports V.25 bis in-band dialing in accordance
with Fascicle VIII.I - V.25 bis (Malaga-Torremolinos 1984,
Melbourne 1988). Recommendation V.25 uses the following
DCE/DTE control signals:
Transmitted data
Received data
Ready for sending
Data set ready
Data terminal ready
Calling indicator
The ISU 512e supports the following V.25 commands to con-
trol automatic calling and answering:
CRN
CRS
PRN
RLN
CIC
DIC
When using stored numbers, V.25 bis accesses stored
numbers
61203086L1-1
Chapter 6. Configuration Menu
) enables in-band dialing over a
LAGS
Circuit 103
Circuit 104
Circuit 106
Circuit 107
Circuit 108/2
Circuit 125
Call request (number in
command)
Call request (using stored
number)
Program stored number
List stored number
Connect incoming call
Disconnect incoming call
through
used by front panel dialing.
1
9
ISU 512e User Manual
) enables in-band
ARKS
6-7
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