AT&T TL7800 User Manual download pdf (Page 52)

Appendix

RF frequency band

1921.536MHz - 1928.448MHz

Channels 5

Operating temperature 32°F - 122°F

0°C - 50°C

Charger voltage

(AC adapter output)

6VDC @400mA

Headset voltage 3.2VDC - 4.2VDC

Replacement battery 3.7V 240mAH

Technical specifications

DECT 6.0 digital technology

Digital Enhanced Cordless Telecommunications (DECT) 6.0 is a new frequency

band that transmits your voice across multiple channels. This technology provides

superior quality of voice and sound, high protection against wiretapping and

better range than 2.4 GHz and 5.8 GHz phone systems, while not interfering with

wireless routers.

Operating range

This cordless headset operates within the maximum power allowed by the Federal

Communications Commission (FCC). Even so, this headset and headset base can

communicate over only a certain distance — which can vary with the locations of the

headset base and headset, the weather, and the construction of your home or office.

Extended range and clarity

Experience the best in long-range coverage and clarity, provided by a unique

antenna design and advances in noise-filtering technology. The TL7800 is a fully

cordless DECT 6.0 headset offering a range of up to 500 feet. Open range test was

performed by Wyle Laboratories, an independent commercial test facility. “Up to

500 feet” cordless headset range refers to the maximum open field range. Actual

range may vary depending on intervening obstacles.

Sound level protection technology conforms to the current regulations and is used to

filter out the loud and high-pitched noises.

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AT&T TL7800 User Manual Page 52