Procedure 11.27: PERFORM EXM-2000 ETS CONNECTION
5E9(2) AND LATER
OVERVIEW
This procedure provides the necessary steps to connect an External Timing Source (ETS) via a T1 interface to the
Time Slot Interchange Unit 4 (TSIU4) of an Extended Switching Module-2000 (EXM-2000). One such appropriate
ETS would be the Building Integrated Timing Supply (BITS) Clock. Note, however, that the existence of an ETS is
not mandatory but suggested if the EXM-2000 has a stand-alone option.
The EXM-2000 may be referred to as an Optical Remote Switching Module (ORM), a Switching Module (SM), or an
SM-2000 at the Master Control Center (MCC) or the Read-Only-Printer (ROP). References to these modules within
this document are synonymous to the EXM-2000.
PROCEDURE
1.
Perform EXM-2000 ETS Connection
5E9(2) and Later
11.27.1 Prerequisite Conditions
1.
The accuracy of the ETS clock should be of Stratum 3 level or higher.
2.
This procedure should be followed during low periods of traffic.
3.
Verify all required hardware listed in the J-drawing J5D003NB-1 List 2A table is available. The TSIU4 must
have a pack code of UM74B or greater.
4.
Electrostatic Discharge (ESD) protection requirements must be followed.
5.
If the EXM-2000 is connected to a BITS Clock, each Module Controller/Time Slot Interchange (MCTSI) side
must
NOT
share the same Timing Output DS1 Automatic card (TOTA) of the BITS Clock. Per MCTSI side, it
is mandatory that the two interface ports are connected to a dedicated TOTA.
11.27.2 Verify and Set Initial Conditions
1.
At the Master Control Center (MCC), verify off-normal conditions in the Switching Module-2000 (SM-2000) to
determine if system status is acceptable to start removal/replacement procedure. Correct any deficiencies as
required.
2.
If a SYS NORM indication is not obtained, type and enter the following command:
OP:SYSSTAT;
11.27.3 Remove Module Controller/Time Slot Interchange (MCTSI) Side 0 from Service
1.
At the MCC, type and enter the following command:
1190,a
Where:
a =
SM-2000 number.
235-105-210
October 1999
Copyright © 1999
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Summary of Contents for 5ESS-2000
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