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Trailer codes
- Thread starter calhoony
- Start date
"Trailer Codes" is that what you call them... On the switching side of things, it is called a "location code", and sometimes followed by Special Information Tones (SIT). This indicates the call stopped at this particular tandem or end office switch. Each ILEC, CLEC or IXC has a different coding system for their tandems and end offices. Unless you follow a particular carrier, or know somebody that has access to this info @ SPRINT/MCI/AT&T, etc., I don't know of any source or web site that has this info. This sort of stuff is helpful when trying to figure out why calls fail to go thru. I have given the location code when reporting trouble to MCI in the past and it saved a lot of time in getting the trouble fixed.
From the location code you mentioned 043T, it indicates the 43T tandem switch serving your end office or area, but could also be at the other end of the call depending upon what number you called and how it was routed.
The BellCore/Telcordia document "The Notes on the Network" (aka: BOC Notes on the LEC Networks) has some references to this info and SITs.
Hope this helps!
....JIM....
From the location code you mentioned 043T, it indicates the 43T tandem switch serving your end office or area, but could also be at the other end of the call depending upon what number you called and how it was routed.
The BellCore/Telcordia document "The Notes on the Network" (aka: BOC Notes on the LEC Networks) has some references to this info and SITs.
Hope this helps!
....JIM....
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