First Page | Document Content | |
---|---|---|
Date: 2012-04-03 10:31:43Electronics Telephone number mapping E.164 ITU-T Voice over IP Caller ID International telecommunications routes Toll-free telephone number International gateway Telephone numbers Telephony Electronic engineering | ITU Workshop on Origin Identification and Alternative Calling Procedures ITU Headquarters Geneva, Switzerland[removed]March 2012Add to Reading ListSource URL: www.itu.intDownload Document from Source WebsiteFile Size: 4,09 MBShare Document on Facebook |