Procedure 11.56: INTEGRATE VENDOR STRATUM 3 BITS TIMING SOURCE FOR
EXM-2000
5E13 and Later
OVERVIEW
This procedure performs the following three major activities:
Verifies that the timing references are connected for the vendor BITS (Building Integrated Timing Supply) clock
(referred to later in this procedure as the "BITS box"), with Stratum 3 capability.
Installs error detection scan points.
Upgrades the TSICOM circuit pack with UM74D.
This procedure applies to
5ESS
®
-2000 switches configured as EXM-2000 (Extended Switch Module-2000) and
DRM-2000 (Distant Reliable Switch Module-2000). For offices configured with VCDX (Very Compact Digital
Exchange) switches refer to Lucent Document 235-120-120.
This procedure applies to switches operating on software release 5E13 and later.
PROCEDURE
11.56.1 Safe Stop Point
1.
Safe Stop Points are provided in the procedure set where progress in the performance of a procedure may
be suspended temporarily without causing degradation in the operation of the equipment. Execution of the
procedure can be halted at one of these points only if all prior steps within the procedure have been
successfully completed.
11.56.2 Prerequisite Conversion Conditions
1.
The following prerequisites must be satisfied before performing this procedure.
The vendor supplied BITS clock:
HP55400A
TM
or
Telecom Solutions
®
DCD-523
is installed and operational and is supplying a reference signal for the existing EXM-2000.
NOTE:
This procedure is based on the use of a Telecom Solutions BITS clock being in place.
The following cables must be connected (See
Figure 11.56-1
):
(a)
Input clock reference cables (2).
(b)
Output clock reference cables (2) to TSIU4/TSIU4-2.
(c)
Scan points wired to the MDF (main distribution frame) for the BITS box.
(d)
Scan point alarm cable (1) from the MDF to the MMSU (modular metallic service unit).
235-105-210
October 1999
Copyright © 1999
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Summary of Contents for 5ESS-2000
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