Avaya 03-300686, Installation And Connection, Page: 96 / 156

Installing and wiring telephones and trunks
96 Installing and Connecting the MDF and Telephones
See Figure 41: Example adjunct power connections on page 85 and Figure 46: Connections
at trunk/auxiliary field on page 96.
Figure 46: Connections at trunk/auxiliary field
Emergency transfer units and associated telephones
An 808A Emergency Transfer Panel mounted next to the trunk/auxiliary field provides
emergency transfer capability. You can use 2500-series analog telephones either for
emergency transfer or as normal extensions. For emergency transfer, connect the phones
directly to the 808A; for normal extensions, wire them through the 808A. Analog central office
(
CO ) and Wide Area Telecommunications Service ( WATS ) trunks can provide emergency
transfer capability.
The 808A Emergency Transfer Panel provides emergency trunk bypass or power-fail transfer
for up to five incoming
CO trunk loops to five selected station sets. The 808A equipment’s
Ringer Equivalency Number (REN) is 1.0A.
At the MDF, the unit is controlled by a connection to a yellow terminal row/connecting block in
the trunk/auxiliary field. The unit is controlled by -48 VDC from the EM TRANS RELAY PWR
terminals. There is one EM TRANS RELAY PWR terminal pair that allows powering one transfer
unit. This wire pair (in the DB9 alarm cable) is connected to the TN2312BP adapter in only the
A-level carrier. Therefore, the G650 Media Gateway only supports one 808A per G650 port
network.
Figure notes:
1. To Network Interface Facility
2. To Control Carrier Auxiliary
Connector
3. One Pair of Wires
4. 24
th
Pair of RJ21X Network
Interface Jack
25
50
IN
r758482b RBP 062696