Nortel Networks manual About your T7406 telephone, Radio range and coverage considerations

16 / About your T7406 telephone

About your T7406 telephone

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 Provisioning the T7406 on page 7.

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).

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