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Install Emergency Transfer Unit and Associated Telephones
Issue 10 June 2005 145
4. Connect the ST leads on the yellow emergency transfer row/connecting block for each
emergency transfer telephone to the ST terminal appearance in the yellow trunk/auxiliary
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).
5. Connect the ST leads from the terminal in Step 4 to the assigned terminal in the blue or
white station distribution field.
Trunk/Auxiliary Field: Telephone Used for Emergency Transfer and as Normal
Extension
To connect the telephone to the trunk/auxiliary field:
1. Connect a pair of wires between the -48V and GRD terminals on the yellow emergency
transfer row/connecting block to the EM TRANS RELAY PWR terminal. See
Figure 66: Connections for Telephone Used for Emergency Transfer and as Normal
Extension on page 144.
2. Connect CO trunk leads from the purple field to the TC terminals on the yellow emergency
transfer row/connecting block for each trunk.
3. Connect CO trunk leads from the green field to the TK terminals on the yellow emergency
transfer row/connecting block for each trunk.
4. Connect telephone leads from the purple analog line board row/ connecting block to the LC
terminals on the yellow emergency transfer row/connecting block for each telephone.
5. Connect ST leads on the yellow emergency transfer row/connecting block for each
emergency transfer telephone to the ST terminal appearance in the purple trunk/auxiliary
field.
6. Connect the ST leads from the terminal in Step 5 to the assigned terminal in the blue or
white station distribution field.
Telephone Installation
To connect the telephone to the MDF:
1. Connect the telephone to the information outlet.
2. Install patch cords/jumper wires between the system side and the station side of the station
distribution field on the MDF.