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The Avaya 120A3 CSU Module Channel Service Unit will provide users essential functions when combined with a DS1 circuit pack.
- Provides the essential functions of external CSUs
- Small size, easy install
- No option switch setting or DS1 cable required
- Vintage 2 provides enhancements to support the payload loopback function
- TN464E to TN464HP
- TN767D or TN767E
- TN2313 or TN2313AP
- TN2464CP and earlier
- Supported on Definity, Multivantage, and Communication Manager servers that support TN circuit packs
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