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Four line keys are built in the Inter-Tel 550
This card is designed for use with no Processor Exemption Card (PEC-1) in the Mitel / Inter-Tel CS-5200 system
16 Channel VoIP Extension Card
The T3 connects through dual BNC connectors and includes an integrated DSU/CSU for circuit protection
ESI IVX 20 242 Expansion Port Card Phones Four line keys are builtESI IVX 20 242 Expansion Port Card Description: The ESI IVX 20 242 is an expansion port card that offers two analog FXO POTS CO lines, four digital extension ports, and two analog extension ports. The ESI IVX 20 242 Expansion Port Card is designed for the ESI IVX 20 and 20 Plus phone systems. ESI IVX 20 242 Features: 2 Analog CO Lines 4 Digital Extensions 2 Analog Extensions Compatibility: ESI IVX 20 and 20 Plus Includes: ESI IVX 20 242 Expansion Port
US$ 1140.00
US$ 116.50
US$ 10.00
US$ 36.11
US$ 111.00
US$ 149.00
