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Avaya Definity TN556B BRI Station Card - Refurbished
- Interfaces the DEFINITY ECS to 12 or 24 ISDN Terminals or Data Modules
- Supports Basic Rate Interface (BRI) protocol for station connectivity only
- Required when using 7500 and 8500 Series ISDN Terminals, 7500B Plus Data Modules and PC/ISDN Platform Expansion Cards
- Expands the capacity of your DEFINITY ECS by plugging you into the power of ISDN for voice/data transmission
|Manufacturer Part #||Avaya TN556B|
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