Avaya 120A5 CSU Module (Channel Service Unit)


Availability: In stock

SKU: 120A5-CSU Category: Product Condition: Refurbished


  • In combination with a DS1 circuit pack, it provides the essential functions of external CSUs

  • Small size, easier to install than external CSU

  • Does not require any option switch settings or DS1 cable

  • Vintage 2 (120A2) provides enhancements to support the payload loopback function available when the ESF framing format is selected (requires 700A loopback jack)


  •  The 120A2 CSU Module is compatible with the following DS1 circuit packs:

  • TN464E to TN464HP

  • TN2464CP and earlier

  • TN767D or TN767E

  • TN2313 or TN2313AP

  • Supported on Definity, Multivantage, and Communication Manager servers that support TN circuit packs


Clip and Cable

12 Month warranty




Avaya PDF

Installing and Operationg 120A CSU.pdf

Weight 2.00 lbs
Shopping Cart
Scroll to Top