GAI-Tronics 265-001 Intrinsically-Safe Telephone Rack-Mount System User Manual
Page 4
Pub. 42004-200B
Intrinsically Safe Rack-Mount Telephone System
Page: 4 of 13
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5. Wire the central office (CO) or PBX lines to a punch-down block (66) near the cabinet. Then wire
the appropriate conductors from the 25-pair patch panel harness assembly to the punch-down block.
Refer to Figure 2. Verify that the wired pairs are from the connectors used in the patch panel. This
can be verified by checking the color coding of the harness assembly wires.
6. We recommend creating a local “base station” to aid in adjusting the telephone ring pitch and to
verify the correct operation of each line card. The base station will aid in ring pitch adjustment by
allowing personnel at the cabinet to communicate to those in the field to adjust the ring pitch level.
The base station can also be connected to each diode barrier terminal strip to check for the correct
operation of that circuit. See Step 7 to assure the correct connection of the base station to a line card.
7. Install the I.S. Series Telephones and wire them back to the central cabinet. The wires will terminate
at the back of the Model 267 Subrack on terminal strips provided on the diode barriers (one terminal
strip per telephone). Follow the wiring instructions in Pub. 42004-380.
N
OTE
: The wiring on this drawing must be followed to maintain intrinsic safety.
8. Plug a user-supplied power cord with a type IEC 320 connector into the socket located on the rear
right side of the subrack assembly. Be sure to select the appropriate cord for the voltage selected on
the power supply (110 V or 220 V). Connect the power cord to a power source.
9. Use the base station to assist in adjusting the ring pitch of each telephone. Several calls must be
placed from the base station to the remote telephone to complete each adjustment. When all the
telephones are properly adjusted, remove the base station, and install it at the desired location.
10. Perform any necessary troubleshooting. See the Troubleshooting section on page 6.