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ZEPHYR
XPORT
USER’S GUIDE
CHAPTER 1 - INTRODUCING THE XPORT 1
1 Introducing the Zephyr
XPORT
: Ordinary Phone Line – Extraordinary Audio
ISDN makes for great sounding remotes, but you can’t always get ISDN where and when you
want it. The
XPORT
lets you use ordinary analog telephone lines or ISDN in the field to connect
with the Zephyr Xstream ISDN codec in your studio.
The Xport features the highest fidelity low- bitrate coding method on Earth: MPEG AAC + the
ground- breaking Spectral Band Replication enhancement: aacPlus). For the first time, you will
experience FM-like audio over analog telephone lines with detailed highs and fuzz-free clarity –
for both speech and music.
XPORT
is the field side of a system that has Zephyr Xstream at the studio. Because the studio
side is connected digitally with ISDN, modem performance is considerably more reliable than
with POTS- only schemes.
To extract maximum reliability from real- world analog Telco lines,
XPORT
has a custom DSP-
based modem that lets us optimize for maximum performance with audio signals. Normal
modems are designed for non- real- time data, where a bad packet may be re-transmitted
without much consequence and “retraining” is not a major problem. With audio, this would
result in serious drop-outs. A modem for live audio requires a different set of trade-offs that are
not possible with off-the- shelf consumer modem chips.
Your studio Zephyr Xstream becomes a universal codec, connecting with both Xport and ISDN
codecs. This saves you money, rack space, operator training, telephone lines, and console/router
audio inputs and mix- minus outputs.
The
XPORT
’s integrated mixer handles two inputs and includes a return mixer to combine local
audio with the remote mix-minus feed. We’ve also included a multi- band automatic gain
control and limiter designed by the Omnia processing gurus. This was crafted to work in
harmony with the audio codec, and is another reason audio is the smoothest, cleanest possible.
The
XPORT
/Xstream combo is the best sounding, easiest to use and most reliable analog Telco
codec system ever offered to broadcasters. Because it lets you get double-duty out of your ISDN
codec and line, it is also cost-effective.
And, with the optional ISDN interface,
XPORT
takes advantage of ISDN as well.
Looking for Information?
We've taken great care to make the
XPORT
as easy to use as possible, keeping non-technical
users in mind. In fact, we expect that most users will be up and running long before they refer to
this guide. Section 4 has Frequently Asked Questions and Section 5 has troubleshooting tips.