Nortel Networks 400 4.0 User Manual

Chapter 11 Installing the analog terminal adapter

N0060612

N0060612

Figure 80   Analog telephone installation overview

The ATA2 connects a standard analog data device, such as a fax or modem, to the BCM system.

 shows an installation overview for connecting a data communication device through an 

ATA2 to the BCM system.

Figure 81   Data communication device installation overview

This section provides information on installing the ATA2:

•

•

•

After the correct environment has been set up, connect the BCM system and the analog device to 
the ATA2 and then connect the power (see 

).

Analog telephone

ATA 2

BCM main unit

Line loop resistance: 
135 ohms maximum

Terminal loop resistance: 
1300 ohms maximum

Central 
Office

ATA 2 power cord

Data communication 
device

ATA 2

BCM main unit

Line loop resistance: 
135 ohms maximum

Terminal loop resistance: 
200 ohms maximum

Central 
Office

ATA 2 power cord