The Best Way To Hear From There; Introducing Zephyr - Telos Zephyr User Manual

THE BEST WAY TO HEAR FROM THERE™

Introducing Zephyr

Zephyr makes transmitting CD- quality audio as easy as sending a fax. Integrating the
most advanced audio coding and digital telephone technologies in a single unit, Zephyr
is the perfect choice for news, sports, music, and production.
On just one ISDN circuit, Zephyr can transmit two- way, 20kHz stereo audio plus
ancillary data virtually anywhere in the world. And it can transmit 20kHz mono audio
using only one of an ISDN line's two channels. No other telephone- based system
provides Zephyr's full bandwidth with equal quality and economy in both stereo and
mono.
To code the audio signals for transmission, Zephyr uses ISO/MPEG Layer III.
International listening tests and the satisfaction of thousands of users certify that Layer
III is best for ISDN. With the vast majority of program material, the coded/decoded
audio cannot be distinguished from the source. Telos Zephyr pioneered the use of this
increasingly popular mode.
In addition to Layer III, Zephyr also incorporates the ISO/MPEG Layer II and G.722
coding methods. Coding on the transmit and receive paths can be independently
selected from the three offered methods to achieve the compatibility and performance
appropriate to your application.
The available ISDN terminal adapter built into Zephyr was designed by Telos
specifically for broadcast and professional audio applications. An available data port
with V.35 and X.21 network interfaces is also offered to connect to external terminal
adapters and CSU/DSUs.
The controls are straightforward for easy operation by non- technical users. Zephyr
includes full metering, a headphone jack, mic/line inputs, input protection limiting, and
the capability to be remotely controlled via computer. Only the Telos Zephyr combines
the power of Layer III with a user interface understandable by non- technical users.
Telos sees ISDN as a tremendously empowering technology for new and creative audio
programming and production. We are dedicated to making ISDN an easy- to- use,
effective tool for broadcast and audio professionals.
For more than a decade, you have depended on Telos for the innovative, value- priced,
and reliable equipment for the broadcast- to- telephone interface. With Zephyr, we once
again offer you the best sound, the most practical features, and the industry's finest
customer support.
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Section 2 INTRODUCTION