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Telos Zephyr ISDN Connection Box and the Voice Over Business

Updated on October 12, 2010
Telos Zephyr
Telos Zephyr

An ISDN connection is very important to the voice over business in the 21st century. The common place product that utilizes this technology is a Telos Zephyr.  An ISDN connection such as the Telos Zephyr send high quality audio over ISDN lines to other studios around the world with very little latency. This allows a studio in New York to record voice over talent in their local studio, another in LA and maybe someone in china, simultaneously and with exceptional quality.

These boxes are not cheap. They cost thousands of dollars to purchase and hundreds per month to use the ISDN lines. 2 ISDN lines are needed per box. One box can send a single mono signal or two separate signals together as a joint stereo signal. The Telos Zephyr takes the audio signal and encodes it with a codec. This changes the audio from an analog signal into tiny packets of digital audio that get reassembled by the receiving Telos Zephyr box and changed back into an analog signal on the other end. The ISDN connection lines are assigned a phone number each. So each Telos Zephyr ISDN box has 2 phone numbers. To connect the two boxes together one person, either sending or receiving, has to dial the other person's two numbers like dialing a phone. Once connected, the boxes should see locked and synced. If they are not you may need to restart them or they could be using different codecs and need to be changed to be the same.

With the use of Telos Zephyr ISDN connection anyone doing voice overs can live where ever and still be represented by the best in the business yet still go to work in there underwear and live basically anywhere they want.


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    • AlanSwenson profile image

      AlanSwenson 6 years ago from Las Vegas, NV

      @karen I'll need more info than that to help you.

    • profile image

      karen 6 years ago

      shooting a trouble locking in at 56 kb, unable to lock at 64kb, Why?