Installing and wiring telephones and trunks
74 Installing and Connecting the MDF and Telephones
Figure 34: 302D to 4-wire DCP wiring
Connecting adjunct power The 400B2 adapter is convenient for connecting local -48 VDC power to a modular plug. See
Figure 35: 400B2 Adapter connecting to a modular plug on page 75.
Each port network can provide power for up to three attendant consoles. This source of power
is preferred for the attendant consoles because it has the same battery backup as the media
gateway. See Auxiliary connector outputs (MCC1 and SCC1 Media Gateways only)on page 81.
Note:
Note: Adjunct power can be provided locally at the telephone or console by either the
1151B1 or 1151B2 power supply. Adjunct power can be provided from the
equipment room or equipment closet with the 1145B power unit. See Installing
and wiring telephone power supplies on page 109 for power supply information
and installation procedures.
Figure notes:
1. 302D Attendant Console
2. 4-wire Digital Line Circuit Pack
(Position 1C02)
3. -48 VDC From Adjunct Power
4. Ground From Adjunct Power
30
2
c
wir
e
RBP
0
4
0596
139
14
40
15
2
3
6
7
8
TXT
TXR
PXT
PXR
TXT5
TXR5
PXT5
PXR5