About Your T7406 Phone; Radio Range And Coverage Considerations; Security Of Conversation; Density And Interference - Nortel T7406 Installation Manual

Chapter 1

About your T7406 Phone

The T7406 is a multiple-handset, single-base cordless telephone system. The T7406 telephone
provides a fully-integrated mobility solution for your business. The T7406 handset allows you to
freely move around your work space while on a call, and still maintain access to all your telephone
system features.
The T7406 telephone uses advanced digital frequency hopping spread spectrum (FHSS)
technology to provide a quality audio path over a 900 MHz radio link. Establishing a call over a
radio link is comparable to a wire line communication.
Note: The T7406 cordless telephone is supported on all Norstar systems (DR3 or
higher) and on all Business Communications Manager systems.

Radio range and coverage considerations

The effective operating radio range in your facility depends on the building construction and the
internal layout of the facility. Typically, a dense office or warehouse environment has an effective
operating radio range of 95 meters (300 feet). An open office environment enhances operating
radio ranges. Refer to

Security of Conversation

Each base station has a unique Security Code (S.S. Code). All three handsets registered to the base
station must share the same Security Code. Each of the three handsets assigned to a base station
must also have a unique identification (Set I.D. 1, 2 or 3).

Density and Interference

For this system to be interference-free, install a maximum of two base stations and six handsets per
location. Each base station provides three independent time compression multiplexing (TCM) line
connections to the telephone system.
Each base station uses half of the Industrial Scientific Medical (ISM) band for its frequency
hopping channels. The dip switches on the base station allow you to assign the base station to use
either the lower half (902-915 Mhz) or the upper half (915.1-928 Mhz).
Each base station must use a separate ISM half band. For more information about setting the dip
switches, refer to
If other devices operating on the ISM band interfere with the T7406 base, the other half of the
band may be used to try to minimize interference. In this situation, install only one base station and
three handsets per location.
"Provisioning the T7406" on page
"Installing the Base Station" on page
25.
9.
T7406 Cordless Handset Installation Guide
5