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Preparatio n for DH S-L Install ati on
9. Route auxiliary device cabling through the appropriate KSU opening and terminate
as required (music source, printer/computer for SMDR, external paging equip., etc.).
10. Terminate station cables on punch-down terminal block(s) on the MDF.
11. Terminate station cables on modular jack assemblies at the station locations.
12. Cross-connect the CO lines and station ports to station cables on the corresponding
punch-down terminal block.
13. Install the station instruments and any optional station equipment, such as headsets
or SLTs.
14. Plug the AC power cord into the dedicated AC outlet and power up by operating the
AC power switch to the ON position.
15. Observe the power/MPB heartbeat LED for flashing status after 4-6 sec.
General Site Considerations
The first step of
equipment (KSUs, boards, etc.). When locating a mounting site for the KSUs, the
following points must be considered:
KSUs are designed for wall mounting and should not be mounted directly to a
masonry or plasterboard wall. It is recommended that 1/2 in. plywood backboard be
firmly mounted to the wall, and the KSU and MDF be mounted to the backboard.
The location must have access to a dedicated 117V AC (±10%), 60 Hz, single-phase
circuit with a circuit breaker or fuse rated at 15 amps. A 3-wire parallel blade
grounded outlet should be within approximately 6 feet of the lower left rear of the
KSU mounting.
The location must have access to a good earth ground, such as a metallic cold water
pipe without non-metallic joints. The ground source should be located as close as
possible to the system.
The system should be located in an area that is well ventilated with a recommended
temperature range of 68-78° F and a relative humidity range of 5-60% (non
condensing).
The system should be located within 25 ft. of the telephone company' s termination
point. Also, the location should be within the prescribed station loop lengths for all
keysets and terminals. If existing cabling is used, its location and conduits should be
considered. Station wiring should be in the building. Station ports are not designed
for installation outside of the building.
Protection from flooding, flammable materials, excessive dust and vibration.
The site should be away from radio transmitting equipment, arc-welding devices,
copying machines and other electrical equipment capable of generating electrical
interferences.
Operation of this equipment in a residential area is likely to cause interference. In
which case the user, at his own expense, is required to take any necessary measures
to correct the interference.
DHS-L
installation, is to locate an acceptable site for the common
Chapter 2 - Description a nd Installation
2-27
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