Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request
From: pdg@chinet.chi.il.us (Paul Guthrie)
Newsgroups: comp.dcom.telecom
Subject: Re: 10xxx/950-xxxx Mapping?
Message-ID: <4668@accuvax.nwu.edu>
Date: 1 Mar 90 22:44:07 GMT
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In article <4535@accuvax.nwu.edu> hokey@plus5.com (Hokey) writes:

>So, is there an easy mapping between the two? (10xxx and 950xxxx)
>If not, how can I find out the 950-xxxx numbers for various
>long-distance companies?

The CIC (Carrier Identification Codes) are the last three digits in
both 10XXX and 950-{0,1}XXX.  Each carrier got to chose if they wanted
a 0 or a 1 preceding their CIC for feature group B (or 950) access.
The list for this comes as a file with Bellcore's V&H tape. (It lists
each CIC and whether 0 or 1 is used for FGBs).  So, if you have the
list from the archives for 10xxx's, you have the list for 950s, but it
may take you two calls (if you guess wrong first) to get there.  One
additional point that should be made is that not all carriers support
FGB anymore..... it is quite inefficient.  


Paul Guthrie
chinet!nsacray!paul or pdg@balr.com or attmail!balr!pdg