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CONFIGURING THE EXPRESS FOR V.25 BIS
IN-BAND DIALING
V.25 bis dialing is used primarily by DTE with synchronous interfaces.
The Express supports the following V.25 bis commands to control au-
tomatic calling and answering:
CRN
CRS
PRN
RLN
CIC
DIC
When using stored numbers V.25 bis accesses stored numbers 1
through 9. See the section VT 100 Terminal Dialing Options on
page 3-6.
SYNC V.25 Dialing
V.25 bis specifies that the characters should be ASCII, 7 bits, with even
parity, and one stop bit. However, for versatility the Express allows
the data bits, parity, and stop bits to be changed as defined under Data
format.
This setting allows for V.25 bis messages in asynchronous (start/stop)
data format.
In synchronous mode, the Express is an ISDN version of a synchronous
modem. For configuration or troubleshooting, the unit requires
connection to an async VT 100 terminal and the dial option must be set
to AT Commands. After the unit is completely configured, set the dial
option to V.25 bis and exit the VT 100 terminal interface. The unit is
now ready to respond to V.25 bis dialing commands. If it is necessary to
reenter the VT 100 interface for re-configuration, troubleshooting or to
view the status buffer, perform the following steps: (1) power the unit off,
(2) set dip switch 2 to off (up) for factory default AT commands, (3)
power the unit back on, (4) set dip switch 2 to on (down), and (5) type
to activate the terminal interface.
AT!V
61200239L1-20
Express 3010/3110 User Manual
Chapter 3. Application Configuration
Call request (number in command)
Call request (using stored number)
Program stored number
List stored number
Connect incoming call
Disconnect incoming call
3-23
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