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The Adtran octal ISDN BRI/U module is a network WAN module designed for the Atlas 800 series router
It interfaces to the tributary modules and provides cross-connect functionality for the payloads of the tributary modules
The Nortel NT5B18AAAD is a four port FXO trunk / CO line module for Nortel phone systems
Auxiliary work
The Inter-Tel WND-2405-A is a 24 volt power supply designed for Inter-Tel phones
ESI E1 612 Port Expansion Card Modules The Adtran octal ISDN BRI/UESI E1 612 Port Expansion Card Description: The ESI E1 612 is a first generation port expansion card for IVX 128 phone systems. The ESI 612 adds 6 analog trunks (FXO) and 12 digital extensions (FXS) to a system. The E1 612 is compatible with ESI E Class, X Class, and IVX128 phone systems. The ribbon cable to connect the ESI 612 port card to the phone system is included. ESI E1 612 Features: Adds 6 CO lines to systems Adds 12 digital extensions to
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US$ 24.99
US$ 45.00
