Avaya 120A4 CSU Module

The Avaya 120A4 CSU Module works on Definity, Multivantage, and Communication Manager servers that support TN circuit packs.


The Avaya 120A4 CSU Module is compatible with the following Definity circuit packs:

TN464E to TN464HP
TN2464CP and earlier
TN767D or TN767E
TN2313 or TN2313AP

A 700A DS1 loopback jack must be installed with this unit.

One Year Warranty



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Avaya 120A4 CSU Module

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