Administer TN464GP/TN2464BP with Echo Cancellation
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This section provides information about the TN464GP and TN2464BP circuit packs with echo cancellation and the procedure to Administer TN464GP/TN2464BP.
The TN464GP and TN2464BP circuit packs with echo cancellation are intended for DEFINITY 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.
The TN464GP and TN2464BP circuit packs are backwards compatible, although the echo cancellation feature can be used only with Release 10 or later software and only after the feature is enabled.
The echo cancellation feature cancels echoes with delays up to 96 ms. Echo cancellation is disabled automatically when the circuit pack detects a 2100-Hz
phase-reversed tone put out by high-speed modems (56 kbaud) but not when it detects a 2100-Hz
straight tone generated by low-speed modems (9.6 kbaud).
For information on installing port circuit packs, see Add Port Circuit Packs. For information on setting the option switches, see Option Switch Settings.
Echo cancellation must first be purchased, then added to the system via a new License File.
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