
Introduction to Meridian Mail Modular Option EC 1-5
Hardware
Standard 1.0 Modular Option EC Installation and Maintenance Guide November 1999
Hardware
Introduction
The Meridian Mail Modular Option EC offers a multiple system
administration capability that allows up to three user
administration terminals to be added to the system.
Mailbox class of service reduces the time to a minimum to set
up or modify large groups of users.
Hardware
The Meridian Mail Modular Option EC platform is packaged in
the universal equipment module (UEM), which allows it to be
integrated within a Meridian 1 column or installed as a stand-
alone system.
Modular Option EC has several hardware features that simplify
the installation, expansion, and maintenance of the system.
These features include
• a choice of an AC- or a DC-powered system
• a high degree of hardware integration, which allows up to
three voice processing nodes to share a single equipment
module
• location of switches on the backplane instead of on the
printed circuit packs (PCPs)
• location of intermodule cabling on the backplane
• disk shadowing to provide protection against loss of data if
a disk fails
• hot-pluggable voice processor cards (that is, the ability to
remove or insert voice processor cards while power is on)
• up to 1600 hours of message storage space using 4.0-Gbyte
disk drives
• up to four available RS-232 ports in a one-module system,
and up to 10 ports in a two- or three-module system
• up to 96 ports
• a tape drive for software installation and system backup
Hardware
configurations
You can configure the system with up to five nodes. (A node is a
functionally independent unit with its own CPU card.) The
module backplane interconnects each node to the other nodes in
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