•Do not stack up the optional service cards.
Wiring Precautions
Be sure to follow these instructions when wiring the unit:
CAUTION
•Avoid using the same AC outlet for computers, telexes, 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
is completed.
•CO lines should be installed with surge protectors. For details, refer to "3.2.9 Surge Protector
Installation".
Notice
•Use 2-pair telephone cables when connecting PTs.
Use 1-pair telephone cables when connecting SLTs, data terminals, answering machines, computers,
Voice Processing Systems, etc.
•Mis-wiring may cause the PBX to operate improperly. Refer to Section 3 "Section 3 Installation" when
wiring the system.
•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 CO line 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.
•To assure good quality telephone connection, it is recommended new and modifications to existing
installation of customer premise wiring shall use solid twisted pair copper conductors with minimum 24
gauge that comply with the electrical specifications for Category 3 wiring as detailed in ANSI/EIA/
TIA-570A Building Wiring Standards.
Document Version 2011-10 Installation Manual 47
3.1.1 Before Installation