Nortel Succession 1000M, Обзор системы

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Memory, processing, and data storage 23
SSC card and components
The NTDK20 SSC card controls call processing, stores system and
customer data, and provides various expansion interfaces. It includes the
following components and features:
•
flash daughterboard memory, DRAM, and backup memory
• two expansion daughterboard interfaces
•
PC Card socket
• three Serial Data Interface (SDI) ports
• 32 channels of Conferencing (64 if two single-port expansion
daughterboards are present, or 96 if two dual-port expansion
daughterboards are present)
• 10 Mbps network interface
• 30 channels of Tone and Digit Switch (TDS) and a combination of eight
Digitone Receivers (DTR) or Dial Tone Detectors (DTD)
•
Networking and Peripheral Signaling
• additional tone service ports (four units of MFC/MFE/MFK5/MFK6/MFR
or eight DTR/XTD units)
The SSC card requires a Software Daughterboard in order to function. The
Software Daughterboard can be ordered preprogrammed with system
software and customer data.
A security device is required on the SSC card of the Main and all
Expansions. The security device, which remains on the SSC card for the
life of the system, is used for system identification. This device allows the
activation of features assigned to the system, through the use of a series of
keycodes. The system uses keycodes for validation purposes.
Signaling Server
CS 1000M Small Systems use a Signaling Server. The Signaling Server is
an industry-standard, PC-based server that provides a central processor
to drive H.323 and SIP signaling for IP Phones and IP Peer Networking. It
provides signaling interfaces to the IP network using software components
that operate on the VxWorks™ real-time operating system.
The Signaling Server has both an ELAN and TLAN network interface. The
Signaling Server communicates with the Call Server through an ELAN
subnet.
The Signaling Server is mounted in a 19-inch rack. The Signaling Server
can be installed in a load-sharing redundant configuration for higher
scalability and reliability.
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
.