Install and Wire Telephones
Task List: Typical Emergency Transfer Panel and Telephone Installation
SI Installation and Upgrades
535
June 2004
Figure 208: 808A Emergency Transfer Panel Mounting
Install the 808A Emergency Transfer panel
Return to Task List
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 209, 808A Emergency Transfer Panel,
on
page 537).
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
Trunk/Test Switches
on page 537.
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 Main Distribution Frame (MDF).
Pin Assignments for 25-Pair
Connector
on page 538 shows the pinouts.
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
