Clock Controller - Nortel Communication Server 1000 Manual

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Clock Controller

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For EuroISDN applications, and for use on multi group systems in
international markets, vintage QPC77E is required.
Other hardware
Additional hardware may also required for PRI capability and applications.
Installation instructions are given in other Nortel publications or supplied by
the manufacturer. This additional hardware may include:
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Clock Controller
QPC775 or NTRB53
Clock Controller card(s) must be installed when DASS2 links are installed.
On some systems, card slots are dedicated for the Clock Controller.
For Large Systems, two Clock Controller cards are used for synchronization;
the Clock Controllers extend timing signals to multiple groups via a junctor
board. The QPC775E must be used on Large Systems.
In a standalone switch or one with only analogue networking, the Clock
Controller is not normally fitted.
Synchronization between switches must always be provided in the case of
DASS2 trunks, and every digital network must be individually checked for
clocking configurations. If the system is to provide clocking over a link, then
Copyright © 2007, Nortel Networks
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or
one NT5K35 or one NT5K75,
or
the Dual DASS/DPNSS Daughterboard NTAG54AA (interfaces to
NT5D97AD and later)
Note: The NTND08AA or QPC949D CPU ROM is required to support
the NTAG54AA operating in the expanded mode (GPT addressing).
QPC471 or QPC775 or NTRB53 Clock Controller(s)
Note: The QPC775 Clock Controller card is not compatible with Stratum
3 clocking in the U.S.A. Therefore, it is available for only the Canadian
and International markets.
one Channel Service Unit (CSU), or Line Terminating Unit (LTU)
one office repeater
one QMT8 Asynchronous Data Module (ADM)
Nortel Communication Server 1000
DASS2 Fundamentals
NN43001-571 02.01 Standard
Release 5.5 7 December 2007
Clock Controller 109