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2.4 Installation Warning
1. Please keep the exchange away from other equipment producing large electromagnetic
disturbance (such as motor and large transformer).
2. None of the wiring of any extension should share the pipeline with power supply or antenna.
Neither should the extension be close to antenna for air broadcasting (including short-wave).
3. Avoid damaging the power-supply cable. Keep it away from water. Encountering the leakage
of water cut off the power immediately.
4. Please don't impact or shake the exchange at any situation. Don't remove the exchange in
working status.
5. Avoid using telephone in thundering.
6. Please don't use the telephone in flammable and leaking gas environment.
7. Unless the equipment is disconnected, please don't touch the broken part of the wiring or any
connection ends.
● Note: Lightning stroke is an accident, which will not be regarded as normal maintenance.
2.5 Direct Access when Power Failure
The C.O. lines will be connected direct to the special Exts automatically when the power
failure. The No.1 C.O. line will be connected to Ext. 601 and No.2 to Ext.602, No.3 to Ext.603,
No. 4 to Ext.604. So you only can use the four Exts as normal phone with direct C.O. line.
For example when someone call in with No.1 C.O. line at the time of power failure, the
Ext.601 will ring, you can only pick up Ext. 601 and talk with the caller.
2.6 External Music Input on Holding
As the diagram on right, connect the external music with
the system music interface.
Note: when connected with the external music, system switch to the external music automatically.
If want to use internal music, should disconnect with the external music, otherwise will be no
music.
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