The Avaya 120A3 CSU (120A3-CSU) is a T1 CSU that connects directly to the DS1 circuit pack on the Avaya Definity, Communication Manager and Multi Vantage. Ships with the clip.
- Compatible with TN464E to TN464HP circuit packs
- Also compatible with TN2464CP and earlier, TN767D or E, and TN2313 and TN2313AP
- Fully Refurbished