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808A Emergency Transfer Panel and telephone installation examples
Issue 3 January 2008 97
Should power be restored to the relays while a call connected through the 808A is in progress,
the 808A maintains the connection until the user goes on-hook. Each 808A can handle up to
five CO trunks.
808A Emergency Transfer Panel and
telephone installation examples
Figure 47: 808A Emergency Transfer Panel on page 98 shows a typical 808A Emergency
Transfer Panel. The 808A connects to the MDF with B25A or A25B cable.
The panel can be installed on any mounting frame in either a vertical or horizontal position. The
housing has ears for screw-mounting and cutouts for snap-mounting the unit in an 89-type
mounting bracket. See Figure 48: 808A Emergency Transfer Panel mounting
on page 99.
Task List: Typical Emergency Transfer Panel and Telephone Installation:
● Installing the 808A Emergency Transfer Panel on page 99
● Installing telephones used only for emergency transfer (trunk/auxiliary field) on page 104
● Installing telephones used for emergency transfer and as normal extension (trunk/auxiliary
field) on page 105