TN771DP Maintenance Pack


Availability: In stock

SKU: TN771DP Category: Product Condition: Refurbished


The TN771DP 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 2 devices and error and flow control on multiple logical links. It recovers packet bus failures involving up to 3 malfunctioning leads (1 or 2 data or parity leads and 1 control lead) by swapping spare leads with the malfunctioning leads. Other maintenance functions include ISDN-PRI testing that originates and terminates loopback tests on ISDN facilities. It provides bit and block error rate information indicating ISDN facility quality.





Avaya-Lucent-Definity-ECS-R6-Maintenance-R6-Vol-I-II.pdfAvaya Lucent Definity ECS Maintenance R6 Vol I and II.pdf

Weight 5.00 lbs
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