Avaya TN771DP Maintenance and Test Circuit Pack

The Avaya TN771DP maintenance test circuit pack performs maintenance functions. These functions include packet bus reconfiguration that allows diagnosis and correction of recoverable packet bus failures before the link access procedure on the D-channel (LAPD) links fail. LAPD is a link-layer protocol on the ISDN-BRI and ISDN-PRI data link layer (level 2). LAPD provides data transfer between two devices and error and flow control on multiple logical links. LAPD swaps spare leads with the malfunctioning leads to recover packet bus failures involving up to three malfunctioning leads (1 or 2 data or parity leads and one control lead).

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A Grade - Excellent condition. Refurbished - Individually packed in anti-static bag.

This item comes with 15 month warranty.

• Performs maintenance functions for Definity
• Functions include Packet Bus reconfiguration that allows diagnosis and correction of recoverable Packet Bus failures before Link Access Procedure on the D-Channel (LAPD) links fail - ISDN - PRI testing that originates and terminates loopback tests on ISDN facilities
• TN 771DP is required in all standard reliability Primary Port Networks (PPNs) and critical reliability Expansion Port Networks (EPNs).
• All standard reliability PPNs when packet endpoints (BRI and/or ASAI) are supported
• The TN771DP circuit pack can be updated using the firmware download feature, which requires use of the TN799 C-LAN circuit pack interface

• 1 x Avaya TN771DP Maintenance and Test Circuit Pack

Do you have a question about this product? Please call 1800 90 90 99.