Nortel Networks BCM200/400 - Manual (Page 176)

176 Chapter 11 Installing the analog terminal adapter
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Figure 81 Analog telephone installation overview
Analog data device
The ATA2 connects a standard analog data device, such as a fax or modem, to the BCM system.
Figure 82 shows an installation overview for connecting a data communication device through an
ATA2 to the BCM system.
Figure 82 Data communication device installation overview
Installing the ATA2
This section provides information on installing the ATA2:
• “Connecting the ATA2”
• “Mounting the ATA2” on page 177
• “Test insertion loss measurement” on page 178
Connecting 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
Figure 83 ).
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