Lucent Technologies 555-232-102 manual Power Options, 2. Wireless Fixed Base

Wireless Fixed Base

ALARM

STATUS

POWER

Figure 3-2. Wireless Fixed Base

Power Options

To operate with CAUs, WFBs in a DWBS require -48 volt (v) accessory power. The -48 v power is provided over twisted pair to the WFB on the fourth pair (white-brown, brown-white; pins 7 and 8) of the RJ45 connector. The power supply must be within 328 feet of the WFB if a single pair is used for accessory power. The power supply must be connected to an outlet that is not controlled by a switch. Power cord locks should be considered. Usually, the power supplies are unplugged.

Centralize power supplies as practical to allow for testing and isolating problems. Use either a battery backup of the supplies or supplies with battery backup for customers that have battery backup from the DEFINITY ECS.

Be sure to put a power supply at each of the following locations and in the order presented:

1.Equipment room. (This is fine as long as the WFBs are within 328 cable feet of the room.)

2.Wiring closet. (This is fine as long as the WFBs are within 328 cable feet of the wiring closet.)

3.Near the WFB. (This should be done only whenever you cannot put the power supply into a closet or an equipment room.)

Issue 5 June 1999 3-13