User's Manual

Page 66 of 332 Chapter 3 — System and site requirements
553-3021-209 Standard 3.00 April 2000
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.