FeaturesIn combination with a DS1 circuit pack, it provides the essential functions of external CSUsSmall size, easier to install than external CSUDoes not require any option switch settings or DS1 cableVintage 2 (120A2) provides enhancements to support the payload loopback function available when the ESF framing format is selected (requires 700A loopback jack)Compatibility The 120A2 CSU Module is compatible with the following DS1 circuit packs:TN464E to TN464HPTN2464CP and earlierTN767D or TN767ETN2313 or TN2313APSupported on Definity, Multivantage, and Communication Manager servers that support TN circuit packsIncludesClip and Cable RefurbishedLibrary Installing and Operationg 120A CSU.pdf
