Configuring The Isu 512 For V.25 Bis In-Band Dialing - ADTRAN ISU 512 User Manual

Chapter 5: Configuration

CONFIGURING THE ISU 512 FOR V.25 BIS IN-BAND DIALING

V.25 bis dialing is used primarily by data terminal equipment with synchro-
nous interfaces (HDLC/SDLC or BSC/BISYNC) not supporting the AT com-
mand set, which is commonly used by asynchronous devices. The ISU 512
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 512 supports the following V.25 bis commands to control automatic
calling and answering:
CRN
CRS
PRN
RLN
CIC
DIC
When using stored numbers, V.25 bis accesses stored numbers 1 through 9 used by
front panel dialing. See Dialing Options (in this chapter).
Auto answer should be disabled if V.25 bis is in control of answering incoming calls
with the CIC/DIC commands, since the other settings for Auto answer will override
V.25 control of the answer function.
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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
ISU 512 User Manual 61202.086L1-1