Mitel MIVOICE OFFICE 250, Installation And Administration Manual

Page: 313 / 585

Installation
285
Installing Digital Telephones
The following telephones can be installed through the DEI:
• 8528 and 8568 digital telephones
• 8500, 8528, and 8560 digital telephones
• Single-Line Adapters, connected to DEM-16 ports
Before installing the digital telephones, unpack each one and check for damage. If items are damaged
or missing, contact Mitel Customer Support. See “Technical Support Contact Information” on
page 1-370 .
Each digital telephone from the factory should include the following:
• Baseplate
• One three-pair line cord, 6 ft
• One handset
• One four-conductor coiled handset cord
• Slide-out directory card (
not
available on Mitel 8500, 8520, or 8560)
• Extra feature key templates
To install a digital telephone:
1. Before mounting the modular jack [line jack unit] assembly and connecting the telephone, mea -
sure the voltage on the YELLOW terminal of the modular jack [line jack unit] assembly with
respect to the BLACK terminal. (The “common” probe of the voltmeter is placed on the BLACK
terminal.) It must m24 VDC (
+
2.0 VDC). If a negative voltage is measured, check the
cabling for a reversed pair. If tip and ring are reversed, the telephone will not function.
2. Mount the modular jack [line jack unit] assembly on the wall.
3. Attach the coiled handset cord to the handset and to the handset jack on the bottom of the
phone. Place the handset on hook. The bottom of the Mitel 8500, 8520, and 8560 phones have
molded channels designed to hold the handset and line cords. For best results when connecting
a handset, uncoil a portion of the handset cord and push the cord into the channel so that the
flat side of the cord is against the phone.
4. Plug one end of the line cord into the wall-mounted modular jack [line jack unit] assembly. Plug
the other end into the line cord jack on the bottom of the phone.
NOTICE
The proprietary digital telephones specified in this section are to be installed only on the appropriate
MiVoice Office 250 systems.
NOTE
Unlike the 8520/8560 digital telephones, the newer 8528/8568 telephones use standard
RJ11 wiring configuration as defined in TIA 968. See Table 22 on
page 112
for cable
termination information.