ADTRAN 1203086L1, Manual

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