On or near computers, or other office equipment, as well as microwave ovens or air conditioners. (It is
preferable not to install the system in the same room as the above equipment.)
Within 1.8 m of radios and televisions. (Both the PBX and PTs should be at least 1.8 m away from such
Do not perform the following:
Do not block the openings of the PBX.
Do not stack up the optional service cards.
Be sure to follow these instructions when wiring the unit:
Avoid using the same AC outlet for computers and other office equipment, as noise generated by such
equipment may hamper system performance or interrupt the system.
Unplug the system from its power source when wiring, and plug the system back in only after all wiring
Trunks should be installed with surge protectors. For details, refer to "4.2.12 Surge Protector
Use 1-pair telephone cables when connecting SLTs, data terminals, answering machines, computers,
Mis-wiring may cause the PBX to operate improperly. Refer to "Section 4 Installation" when wiring
If an extension does not operate properly, disconnect the telephone from the extension line and connect
it again, or turn off the PBX using the power switch, then turn it on again.
Use twisted pair cable for trunk connection.
To prevent signal noise from interfering with the performance of the product, do not run unshielded
telephone cables near AC power cables, computer cables, AC power sources, etc. When running
cables near other noise-generating devices or cables, use shielded telephone cables or shield the
telephone cables with metal tubing.
Preparing the Network Environment
Be sure to prepare your network's environment for the installation of the PBX according to the intended PBX
networking configuration. For details about PBX network configurations, refer to "Section 8 Networking
4.1.1 Before Installation