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  2. Avaya Definity TN556D ISDN-BRI 4-Wire S/T-NT 12-Port Interface (Refurbished)

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AVDEFTN556D-REF

Avaya Definity TN556D ISDN-BRI 4-Wire S/T-NT 12-Port Interface (Refurbished)

https://www.startechtel.com/web/image/product.template/72425/image_1920?unique=537eebe

$ 249.00 249.0 USD $ 249.00

$ 249.00

  • Condition: Refurbished
  • Warranty: 3 Month Warranty

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Avaya Definity TN556D ISDN-BRI 4-Wire S/T-NT Interface (12-Ports).

More Information

  • Provides 12-Ports connecting to ISDN-BRI terminals
  • Each port has TXT, TXR, PXT, and PXR signal leads
  • Up to 8 ports can be used for adjunct switch application interface (ASAI) links
  • Each port operates at 192 kbps per second and has 2 B-channels and 1 D-channel
  • Requires a packet control circuit pack (TN778) when used in R6si systems or packet bus-equipped R6vs systems
  • Range of up to 3300 ft. maximum from the system to the voice terminal
  • Can connect 24 terminals where each terminal uses 1 B-channel and shares the D-channel
  • Compatible with Definity R7 or later

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