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6 Hardware additions
Add TN464GP/TN2464BP with echo cancellation
234 S8100 Installation and Upgrades
November 2003
Add TN464GP/TN2464BP with echo cancellation
The TN464GP and TN2464BP circuit packs with echo cancellation are intended for S8100/G600/CMC1
customers who are likely to encounter echo over circuits connected to the Direct Distance Dialing (DDD)
network. These circuit packs are intended for channels supporting voice; therefore, they support the
following trunks: CAS, CO, DID, DIOD, DMI, FX, Tie, WATS. They do not support any data trunk
groups.
NOTE:
The P suffix designation means the circuit pack is programmable; new firmware can be
downloaded directly to the circuit pack.
The TN464GP and TN2464BP circuit packs are backward compatible, although the echo-cancellation
feature can only be used with Release 9 or later software and after the feature is enabled.
The echo-cancellation feature cancels echoes with delays of up to 96 ms. Echo cancellation is disabled
automatically when the circuit pack detects a 2100-Hz phase-reversed tone put out by a high-speed (56-
kbps) modem, but not when it detects a 2100-Hz straight tone generated by a low-speed (9.6-kbps)
modem .
For information about installing port circuit packs, refer to Installing Port Circuit Packs. For information
about setting the option switches, refer to Option Switch Settings. For information about administering
the circuit packs, refer to the Administrators Guide for Avaya Communication Manager (555-233-506).
Echo cancellation must first be purchased, then activated by someone with customer options login
privileges. Refer to the Administrators Guide for Avaya Communication Manager (555-233-506).
Use the following procedure to modify the settings:
NOTE:
You do not need to busyout the circuit packs to modify the settings. But the modified
settings do not take effect until either the port is busied out or the scheduled maintenance
runs.
1 Type display system-parameters customer-options, and press Enter. On screen 2 verify that the
DS1 EchoCancellation? field is set to y. If not, contact someone in your area with customer
options login privileges.