Installing and wiring telephones and trunks
Installing the Avaya S8700 Media Server with an Avaya G650 Media Gateway
221
December 2003
Figure 88: 808A Emergency Transfer Panel mounting
Installing the 808A Emergency Transfer Panel
NOTE:
The 808A must be installed in a location that can be accessed only by authorized
personnel. The location must meet standard environmental considerations such as
temperature, humidity, and so forth.
1
Verify dial tone is present at each trunk circuit.
2
Locate the circuit start selection switches (see
Figure 87, 808A Emergency Transfer Panel,
on
page 220).
These are the first 10 two-position switches on the left side of the Emergency Transfer Panel.
They are used to set each of the five incoming trunk lines to either loop start or ground start. Two
switches are used for each circuit; switches 1 and 2 are used for circuit 1, switches 3 and 4 are
used for circuit 2, and so forth. See
Table 28, Trunk/test switches,
on page 222.
3
For loop start, set the switches to the left. For ground start, set the switches to the right.
4
Connect a 25-pair cable between the male RJ21 25-pair connector on the Emergency Transfer
Panel and the yellow field of the MDF.
Table 29, Pin assignments for 25-pair connector,
on page
223 shows the pinouts.
5
Make cross-connections for each emergency trunk/emergency station pair.
The 808A is connected to the MDF by means of a B25A cable.
Figure 89, Connections for
telephone used for emergency transfer,
on page 224 shows the connections at the trunk/auxiliary
field for a telephone used only for emergency transfer.
Figure 90, Connections for telephone used for emergency transfer and as normal extension,
on
page 225 shows the connections at the trunk/auxiliary field for a telephone used for emergency
transfer as well as a normal extension.
Figure notes
1
808A Emergency Transfer Panel
2
Ear for Screw Mount
3
Cut-Out for Snap Mount
4
25-Pair Male Connector
5
Circuit Start Switches
808a_em LJK 042396
