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From: stone@nbc1.ge.com (Anthony Stone)
Newsgroups: comp.dcom.telecom
Subject: Re: ABC TV Feed Via Phone Number in NYC
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Date: 22 Feb 90 20:41:39 GMT
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Reply-To: stone@nbc1.UUCP (Anthony Stone)
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X-Telecom-Digest: Volume 10, Issue 125, Message 4 of 11


Steve Huff mentions a phone number in New York which answers with ABC
TV program audio. This is most certainly one of their many IFB
(Interruptible FoldBack) lines which are used so that talent and
interview guests can hear questions being posed to them during remote
[live] broadcasts.  Producers can also interrupt the audio with cues
like "the tape isn't ready, go on to the next story."

If the interview is via satellite, then "mix-minus" audio is sent.
This is an output of the audio board which includes all audio sources
except the satellite feed. Otherwise the person being interviewed
would hear his voice in his earphone a half second later. Very
disconcerting, believe me! (You can simulate this with a 3-head audio
tape recorder.  Listen to the playback head while recording into a
microphone.)

No, I won't give out our IFB numbers!  :-)


Anthony Stone			NBC News Graphics, New York, NY
stone@nbc1.ge.com		212-664-2206