Telephone systems -- Examinations -- Study guides : Implementing Cisco IP Telephony and Video, Part 2 (CIPTV2) Foundation learning guide (CCNP Collaboration exam 300-075 CIPTV2) / Willam Alexander Hannah, Akhil Behl
Telephone systems -- Social aspects -- Congresses. : The Intelligent telecommunication network : privacy and policy implications of calling line identification and emerging information services : proceedings of a CIRCIT conference held at CIRCIT on 3 December 1991 / edited by Bill Melody