Avaya 120A3 CSU Module (Channel Service Unit)


Availability: In stock

SKU: 120A3-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, Cable





Avaya PDF Installing and Operationg 120A CSU.pdf

Weight 3.00 lbs
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