Avaya Definity ECS MCC Cabinet Fan/Filter Shelf, DC Power Unit, 3 Carriers. Used, Good Condition, Removed from service. A Carrier: TN775D Maintenance, v3 TN2312AP IPSI TN570C Expansion Interface v3 TN793B 24 Port Analog v7 (5) TN2224 2W Digital Line v5 TN793B 24 Port Analog v7 (2) v6 (1) TN2224CP 2W Digital Line HV5 (4) TN2224B 2W Digital Line v3 TN2224CP 2W Digital Line HV9 (2) TN2224CP Digital Line 24 Port HV1 649A Power Unit B Carrier: TN744E Call Classifier DE v2 TN2312AP IPSI VH2F2 TN793B 24 Port Analog v7 (11) TN2224CP 2W Digital Line HV5 TN2224 2W Digital Line v5 TN2224 2W Digital Line v7 TN2224CP 2W Digital Line HV8 (2) TN2224CP 2W Digital Line HV5 TN2224CP 2W Digital Line HV9 649A Power Unit C Carrier: TN744E Tone Detector v7 TN793B 24 Port Analog v7 TN2224CP 2W Digital Line HV5 TN793B 24 Port Analog v7 (11) TN2224CP 2W Digital Line HV8 (2) TN2224 2W Digital Line v5 649A Power Unit