Avaya/Lucent 120A4 Channel Service Unit CSU

The Avaya 120A4 CSU is a T1 CSU that connects directly to the DS1 circuit pack. Ships with the clip.

Avaya/Lucent 120A4 Channel Service Unit CSU Compatibility

• Compatible with TN 464E to TN464HP circuit packs
• Also compatible with TN2464CP and earlier, TN767D or E, and TN2313 and TN2313AP