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TN771D Maintenance Test Card

Like New: $69.00
This product is eligible for 2 Year Platinum Protection!

TN771D Features

  • 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 771D 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

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