Nortel Networks NN43011-110 - Manual (Page 19)

Description 19
When the main power is cut off to the system, optional Power Failure
Transfer Units (PFTU) connect predetermined analog (500/2500-type)
telephones directly to the Central Office (CO) trunks. The PFTU supports
five to eight telephones, depending on the PFTU used.
Chassis system
The Meridian 1 PBX 11C Chassis is a small digital communication system
that consists of a Chassis plus an optional Chassis Expander. Two copper
cables connect the Chassis Expander to the Chassis. In addition, the
Chassis system can be expanded to include up to four Chassis (or Chassis
+ Chassis Expander pairs).
The Chassis system can be mounted:
• in a 19-inch rack/equipment Cabinet
• on a wall in a vertical position
• on a wall in a horizontal position
The CS 1000M Chassis is a Small System with a Signaling Server in the
network configuration.
If a Signaling Server is added to a previously CISPR Class B system
(previously used in some specific countries), the system is now compliant
to Class A.
The Chassis system can be expanded using either fiber or IP connectivity,
or a mixture of both. Refer to
"Fiber-optic and IP expansion" (page 33)
for more information.
A Chassis with Chassis Expander can support up to 160 lines or up to
1000 IP Phones. A fully expanded Chassis system can support up to 720
lines or up to 1000 IP Phones.
Note: When the term "Main" is used on its own, it refers to a Main
Chassis. When the term "Expansion" is used on its own, it refers to an
Expansion Chassis.
Card slot specifications
The Main Chassis has five card slots, two of which are dedicated: slot
0 is dedicated to the Small System Controller (SSC) card, and slot 4 is
dedicated to the 48-port Digital Line Card (NTDK16). Slots 1–3 support
existing IPE and Common Equipment (CE) cards (for example, PRI, PRI2,
DTI, DTI2, MISP, and SDI/DCH).
The Chassis Expander has four card slots. The Expander supports Meridian
Mail in slot 10 only. You can place any IPE card in slots 7, 8, 9, and 10. The
CE-MUX bus extends to slot 10 for Meridian Mail only.
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Small System Overview
NN43011-110 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2003 - 2007, Nortel Networks
.