Lucent Technologies 5 manual System Auxiliary Power, Battery Backup Power, Telephone Power Units

Models: 5

1 429
Download 429 pages 23.98 Kb
Page 113
Image 113

MERLIN LEGEND Communications System Release 5.0

Issue 1

System Manager’s Guide 555-650-118

June 1997

3 System Components

 

Power-Related Hardware

Page 3-46

 

 

System Auxiliary Power

3

When your system is installed, when you change the system operating mode, or when you expand your system, a Lucent Technologies technician calculates the unit load on your system and determines your overall power needs. A unit load is a measure of power used to determine the electrical load that the following components have on each carrier’s power supply:

Telephones and adjuncts

800 DID modules

Only the telephones and adjuncts that connect to the analog and MLX extension jacks on the control unit require unit load calculation, not equipment that has its own power supply (for example, a fax machine, an MFM, or an answering machine). If, after a system is changed, additional power is required for the control unit, your Lucent Technologies representative sees that an auxiliary power unit is installed.

NOTE:

Some system power supplies limit the number of 100D modules and 800

NI-BRI modules (Release 4.0 and later systems only) installed in a carrier.

A newer power supply, the 391A3, eliminates the restriction. Consult your

Lucent Technologies representative for details.

Battery Backup Power

3

An Uninterruptible Power Supply (UPS) unit can provide battery backup for power to the system. Basic UPS provides power for 15 minutes; however, you can add reserve UPS units to basic UPS. Each reserve unit extends backup power for an additional hour.

Telephone Power Units

3

The KS22911-L1 and 329A power units provide additional power to MLX or analog multiline telephones that have adjuncts, adapters, or two DSSs attached (MLX telephones only), or to telephones located far from the control unit.

These power units are installed between the telephone and the wall jack. Adding local power to a few telephones can reduce system load.

Protection Accessories

3

This section describes accessories that are needed for grounding and protecting special telephone connections from power surges, electromagnetic interference, and electrostatic discharge.

Page 113
Image 113
Lucent Technologies 5 manual System Auxiliary Power, Battery Backup Power, Telephone Power Units, Protection Accessories