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