Avaya Definity TN777B Network Controller V21 Lucent

At&T TN777B Network Control V18

AVAYA TN464GP 108826884 DS1 INTFC 24/32 BOARD PCB HV2

Avaya, AT&T, Lucent, Definity TN570D Expansion INTFC V6

Used 1 pcs NEXCOM PEAK777 REV:B mainboard Dual network port Tested OK

Nortel QPC720E F PRI Northern Telecom Avaya NT Meridian PLC QPC752D QPC754 QPC

TN754B Avaya Definity 7400 8400 4-Wire DCP Digital Line Circuit Card ***New***

Nortel NT4N48AA 03 Sys Ut Northern Telecom Avaya NT System Utility PLC Networks