Nortel Networks BCM50 - Manual (Page 122)

122 Chapter 11 Installing the analog terminal adapter
NN40020-302
Figure 57 ATA2 back view
Test insertion loss measurement
The maximum loss for ATA2 to Central Office (CO) configuration must not exceed 10 dB. See the
figure
Insertion loss from the CO to the analog telephone on page 122.
Figure 58 Insertion loss from the CO to the analog telephone
Measure the total insertion loss between the CO and analog device by using standard dial-up test
lines with a transmission test set (for example, Hewlett-Packard 4935A Transmission Test Set).
Longitudinal balance to ground 50 dB
60 to 4000 Hz
With IEEE 455–1976 test
Overload level 3 dB
Mounting keyhole slots
Analog telephone
ATA2
BCM50
BCM50 to ATA2
ATA2 to BCM50
10 dB Max
Cable loss
Central
Office