Install Telephones Used Only for Emergency Transfer (Trunk/Auxiliary Field)
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- Connect a pair of wires between the
-48V and
GRD terminals on the yellow emergency transfer row/connecting block and the
EM TRANS RELAY PWR terminal. See Connections for Telephone Used for Emergency Transfer.
- Connect Central Office (CO) trunk leads from the purple field to
TC terminals on the yellow emergency transfer row/connecting block for each trunk.
- Connect CO trunk leads from the green field to
TK terminals on the yellow emergency transfer row/connecting block for each trunk.
- Connect
ST leads on the yellow emergency transfer row/connecting block for each emergency transfer telephone to the assigned terminal in the blue or white station distribution field. The
ST terminal leads should be terminated on the following pairs: 1, 4, 7, 10, 13, 16, 19, or 22 (the first pair of any 3-pair group).
- Install the telephone:
- Connect telephone to the information outlet.
- Install patch cords/jumper wires between the system side and the station side of the station distribution field on the MDF.
Connections for Telephone Used for Emergency Transfer
Figure Notes:
-
To Network Interface Circuitry
-
To TN747 (or Equivalent) Central Office Trunk Circuit Pack
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To Blue or White Station Distribution Field
-
To Power Transfer Unit
-
To Control Carrier Auxiliary Connector
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