Configurator Procedure for PBX Station/CENTREX PSTN Line App. Adjustments

For this procedure, one voice channel with an FXS interface is required as a companion channel. If there are no other voice channels available locally, then the local FXO voice channel will have to be connected to a companion FXS voice channel across the network. In that case, two technicians will be required to perform the adjustment procedure, one at each end. If no FXS channels are available in the network, one will have to be temporarily configured or installed.

Note: If there are no single-line telephone circuits available from the PBX or CENTREX/PSTN, then the line assigned to the channel that is temporarily converted to FXS can be used for test purposes.

Use the test setup shown in the figure below. Initially, set both Voice Network Analyzers to BRDG, TEST, and OFF. The PBX station numbers and network extension numbers in the following figure are fictitious, used here for reference only.

• Place a call from PBX station 123 to station 456. To do that, lift the No. 1 telephone off-hook, wait for the dial tone from the PBX, then dial number 456. You should hear the dial tone from voice channel number 1. Dial extension number 16. The No. 2 telephone set will ring.
• Place the SETUP switch on the No. 2 Voice Network Analyzer to TERM. The telephone will stop ringing.
• Place the SETUP switch on the No. 1 Voice Network Analyzer to TONE, and disconnect the No. 1 telephone from the Voice Network Analyzer.
• Display the input level status of the desire voice channel by using the following Configurator procedures:
• Display the Input Level (Passport 4430/50/55)
• Display the Input Level (Passport 4460)