Nortel Networks Option 11C Mini manual Auxiliary equipment power, Modem requirements

Page 66 of 332 Chapter 3 — System and site requirements

Auxiliary equipment power

Terminals, printers, modems, and other data units used with the Option 11C Mini require special wiring considerations.

Power for system equipment in the switch room must:

•be powered from the same panel or transformer as the Option 11C Mini

•be grounded to the same panel or transformer as the Option 11C Mini

•be labeled at the panel to prevent interruption that is not authorized

•not be controlled by a switch between the breaker and the equipment

Service receptacles for Option 11C Mini AC systems and related equipment must be:

•of the isolated ground type, such as NEMA IG5-15

•rated for 120 or 240 V, 15 or 20A, 50-60 Hz, 3-pole, 3-wire, grounded

•grounded to the same location so as to form a Single Point Ground

Modem requirements

Equip the system with a modem to allow remote access. Refer to “Modem setup requirements” on page 192 for information about setting up the modems recommended for use with the Option 11C Mini system.

Note: In the UK, British Telecom RACE modems require a Modem

Eliminator (NULL Modem without hardware handshaking) A0378652

F-F converter or A0381016 M-F converter.

With or without Meridian Mail

The minimum requirement is a 1200 bps auto-answer modem.

If an error-correcting modem is connected to the Option 11C Mini, all flow-control and error-correcting functionality of the modem must be disabled to ensure correct operation. Refer to the modem manufacturer’s instructions for information.

553-3021-209 Standard 3.00 April 2000