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Introduction
555-230-024
1-26 Issue 5 January 1998
Remote Service
DEFINITY ECS’s remote-service capabilities allow greater flexibility in configuring
your system. Although the system has high capacity and supports up to 25,000
lines, you may need to serve some users who are far from the main system. To
satisfy these needs, you can use remote Expansion Port Networks using
fiber-optic links. For locations further apart, you can connect a port network
remotely over one to four T1 or E1 lines using a converter.
The number of T1 or E1 lines required to support the remote port network
depends on the requirements of the remote port network. For example, with four
T1/E1 lines, a maximum of 92 or 120 simultaneous voice and/or data connections
can be made between the remote port network and the DEFINITY ECS. Four
channels are reserved for signaling between the remote port network and the
system.
Power
DEFINITY ECS can accept a variety of AC or DC power. The system can operate
without requiring a power transformer in almost any part of the world.
During a power outage, individual cabinets (single or multicarrier) will continue to
function for up to 15 seconds; the multicarrier cabinet will function for up to 10
minutes without power, depending on configuration. Optionally, an uninterruptible
power supply can protect a DEFINITY ECS system from under or over-voltage
conditions, line frequency fluctuations, and power blackout of short duration. A
battery backup system can be used to provide power for up to 8 hours, depend-
ing on the type and quantity of circuit packs and amount of traffic during the
holdover period.
Software
All DEFINITY ECS systems throughout the world use the same basic software. To
provide this commonality while still accommodating wide variations in
configurations and options, the system dynamically allocates internal memory
storage. Memory is sized when the system is initialized, selecting the proper
software parameters based on the hardware configuration.
In addition to the basic software, various optional packages can enhance the
capabilities of the system. Some of the capabilities described in this document
require optional software. See your account representative for more information.
The basic software is a prerequisite for all the optional packages.