Encyclopedia > Out-of-band signaling

  Article Content

Out-of-band signaling

In telecommunications, the term out-of-band signaling has the following meanings:

1. Signaling that uses a portion of the channel bandwidth provided by the transmission medium, e.g. , the carrier channel, which portion is above the highest frequency used by, and is denied to, the speech or intelligence path by filters.

Note: Out-of-band signaling results in a lowered high-frequency cutoff of the effective available bandwidth.

2. Signaling via a different channel (either FDM[?] or TDM) from that used for the primary information transfer.

Contrast with common-channel signaling[?], in-band signaling[?], out-slot signaling[?].

Source: from Federal Standard 1037C and from MIL-STD-188



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Teleological argument

... an explanation. The only reasonable explanation for the existence of X is that it was designed and created by an intelligent, sentient artifer/designer. X was not ...