Procedure 11.47: AUTO-SYNCHRONIZATION FEATURE ACTIVATION FOR NETWORK
CLOCK MODEL 2
OVERVIEW
This section describes the procedure to activate Auto-synchronization on Network Clock Model 2 (NC2). This
activation allows the NC2 to perform a continuous integrity check on an out-of-service reference. When the NC2
determines that the reference is good, the AM will automatically restore it to service.
This feature is applicable to Communication Module 2 (CM2) and Communication Model 2 Compact (CM2C).
Prerequisite Conditions
(1)
The Auto-Synchronization feature requires that the NC2 TN1276 circuit packs be equipped with the following
firmware:
High Stability NC2 : TN1276 with microcode of MC5D222A2 or higher.
Medium Stability NC2 : TN1276 with microcode of MC5D215A2 or higher.
The firmware can be upgraded to the proper level by two different methods. If the TN1276 circuit packs are
series 3 or lower, the pack itself needs to be replaced. If the existing TN1276 circuit packs are series 4 or
greater, the EPROMs on the circuit packs can be replaced. If the existing circuit packs need to be upgraded
(Reference ED5D818-30), all required hardware should be at site prior to the start of this procedure.
(2)
The office must be running the following software:
5E9(1) with Software Update applied that has Auto-Synchronization.
5E9(2) with Software Update applied that has Auto-Synchronization.
5E10 or later Software Release.
NOTE:
Contact your Regional Technical Assistance Center if there are questions concerning which update
contains Auto-Synchronization.
(3)
Each Switching Module functioning in an active/standby mode.
(4)
All routine exercises and automatically scheduled diagnostics must run trouble free. Minor problems should
be assessed prior to performing this activation to determine if this procedure could have an adverse affect on
the operation of the switch.
(5)
Person performing the conversion must be able to use RC/V in order to complete this procedure.
(6)
A standard IC extraction tool must be available if the EPROMs will be replaced on the TN1276 circuit pack.
PROCEDURE
1.
Auto-Synchronization Feature Activation for Network Clock Model 2
11.47.1 Obtain System Status
235-105-210
October 1999
Copyright © 1999
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