Hello and welcome to our web site.
It has been designed to try and help future students understand the commissioning procedures of a Nortel TN-4XE along with providing useful SDH reference material.

During the past few weeks our team has commissioned four TN-4XE switches as per Nortel Commissioning Procedures (323-1123-220) The commissioning procedure is segmented into several key areas. We found that each area required us to research specific topics.
This site has therefore been structured to detail our findings alongside the applicable areas as follows:

Preliminary Procedures – General Useful Command Structures along with card types/functionality.

In-Station Testing – The KLM Numbering Format.

Point to Point System Testing – Path Protection/One to One Equipment Protection.

ADM System Testing – General ADM Theory.

Ring System Testing – Synchronization.