V.25 Bis Network Interface; Figure 2-7: Data Unit Connection Panel - PictureTel Concorde 4500 Administrator's Manual

V.25 bis Network Interface

The Northern Telecom ITU-T V.25 bis network interface provides
serial automatic dialing.
This interface is designed for use only with those Northern Telecom
high-speed (64 kbps) DATAPATH Data Units that support the V.25
bis protocol, such as the Model NT4X25AG. Depending on the
number of lines conÞgured with your system, you may need to
connect to two Data Units. You must set the switches on each Data
Unit in accordance with the parameters that Northern Telecom has
speciÞed for your installation.
You can place calls with your V.25 bis system in one of two ways:
From the system keypad:
Refer to the Concorde¥4500 UserÕs Notebook for procedures on
how to make video calls.
From the Data Unit keypad:
Refer to the Northern Telecom Meridian Data Services: Data Unit
User Guide (P0673940-S943) for instructions for how to test and
operate the Data Unit.
Connecting the Cables
To connect your V.25 bis network interface to the Data Unit:
1. Plug the M-34 connector on the adapter cable into the connector
on the back of the Data Unit, shown in Figure 2-7.

Figure 2-7: Data Unit Connection Panel

Attaching Digital Network Cables
2-11