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Verticall 
Definity
Definity Circuit Packs
Definity TN1648
Avaya Definity TN1648 circuit packs run routines for maintenance software. The Definity TN1648 circuit packs have five LED alarm panels and toggle switches to inhibit automatic emergency transfer of PPN analog lines. Avaya TN1648 circuit packs provide tip/ring ports with built-in modems allowing remote administration terminals to access them. For more information regarding the Avaya Definity TN1648 circuit packs, please contact Verticall by calling 866.459.2255.
$395