- Call collision
telecommunications, a call collision (commonly known as glare) is one of two things:
contentionthat occurs when a terminal and datacircuit-terminating equipment ( DCE) specify the same channel at the same timeto transfera callrequest and handle an incoming call. When call collisionoccurs, the DCE proceeds with the call request and cancels the incoming call.
#The condition that occurs when a
trunkor channel is seized at both ends simultaneously.
If you have ever tried to make a call out on a PBX, and been accidentally connected to an incoming call, you have experienced glare. This can sometimes happen at home too, if you pick up your phone to make a call out at the exact second that a call is about to start ringing in.
Multi-line huntinggenerally avoids glare by picking trunks in opposite preference order so the highest numbered line, which is last choice for incoming calls, is first choice for outgoing calls, like so:incoming-->1 2 3 4 5 6 7 8<-- outgoing
For PBX trunks, glare can further be reduced by using
ground starttrunking. IE: Nortel BSP discourages using loop starttrunks for this and other reasons. Long Distance exchanges in the 1950s and 60s incorporated Glare Detectors to alleviate the problem.
Wikimedia Foundation. 2010.
Look at other dictionaries:
Call Collision — Anrufkollision … Acronyms
Call Collision — Anrufkollision … Acronyms von A bis Z
Collision (Heroes) — Collision Heroes episode A messenger from the future has a message for Peter … Wikipedia
Call of Duty 4: Modern Warfare — Éditeur Activision Square Enix (2009 sortie japonaise) Développeur … Wikipédia en Français
Collision detection — For collision detection on networks see CSMA/CD Collision detection typically refers to the computational problem of detecting the intersection of two or more objects. While the topic is most often associated with its use in video games and other … Wikipedia
Call of Duty: Modern Warfare 3 — MW3 redirects here. For the 1999 video game, see MechWarrior 3. Call of Duty: Modern Warfare 3 … Wikipedia
Call It Stormy Monday (But Tuesday Is Just as Bad) — Infobox Standard title = Call It Stormy Monday (But Tuesday Is Just As Bad) image size = 180px caption = Cover to a T Bone Walker album containing the song writer = T Bone Walker composer = T Bone Walker lyricist = published = 1947 language =… … Wikipedia
2008 Chatsworth train collision — This article is about the 2008 Metrolink train collision in Los Angeles. For the 1887 train collision at Great Chatsworth, Illinois, see 1887 Great Chatsworth train wreck. Chatsworth train collision Resc … Wikipedia
Ehime Maru and USS Greeneville collision — infobox generic | color = #cc9999 name = Ehime Maru and USS Greeneville collision sub0 = img1 = EhimeMaru.jpg width1 = 325px cap1 = The Japanese high school fishing training ship Ehime Maru lbl1 = Date: row1 = February 9, 2001 lbl2 = Place: row2 … Wikipedia
2002 Überlingen mid-air collision — Bashkirian Airlines Flight 2937 DHL Flight 611 CGI rendering of DHL Flight 611 moments before colliding with Bashkirian Airlines Flight 2937 Accident summary Date … Wikipedia