Nortel Networks BCM1000 - Manual (Page 220)

220 Chapter 13 Installing Analog Terminal Adapters
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Connecting the ATA 2
After you have determined that the proper environment exists, you can connect the ATA 2 to the
line and set. Refer to
Figure 86 .
Figure 86 Single line telephone installation overview
Figure 87 shows the pinouts for the connection cables.
Figure 87 ATA 2 pin outs
Single-line telephone
ATA 2
BCM1000
Line loop resistance:
135 ohms maximum Terminal loop resistance:
1300 ohms maximum
Central
Office
ATA 2 power cord
TCM*
TCM* Ring (B-Lead)
Tip (A-Lead)
Line Jack Terminal Jack
* The TCM input is not polarity sensitive.