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Chapter 12 Installing Analog Terminal Adapters 155
Installation and Maintenance Guide
For analog device to CO measurement
Use this procedure to measure the insertion loss from the analog device to the CO:
1 Establish a connection to a silent termination on the CO service line with an analog telephone
attached to the ATA 2.
2 Make sure the analog port terminates correctly in 600 ohms by:
• replacing the analog telephone with the test set
• using
TRANSMIT/600 OHM/HOLD mode on the test set
3 Make sure the test set connects in parallel to the service line before removing the analog
telephone or the line drops.
4 Remove the analog telephone.
5 Introduce a 1 kHz tone into the analog line at - 10 dBm, and measure the level at the CO
exchange.
Configuring the ATA 2
Configure the ATA 2 using the Business Communications Manager Unified Manager. For detailed
configuration information refer to the Analog Devices Configuration Guide.
Note: The difference in levels is the transmit loss and must be less than 10 dB
(for example, 9 dB is acceptable).