What is the "b" for in CDR Table detail?

[astanislaus]

If you see in the CDR Table on the CCM values such as b00210518004 for Original Called Party Number and Final Called Party Number, what does the "b" stand for? Shouldn't it be a like a phone extension number or a normal phone number. Why the "b"?

[aaronw.ca]

Please see your original post for a reply:

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=IP%20Communications%20and%20Video&topic=IP%20Telephony&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1ddae02a