Title :
iGSM: VoIP service for mobile networks
Author :
Rao, Herman C H ; Lin, Yi-Bing ; Cho, Sheng-Lin
Author_Institution :
AT & T Labs., USA
fDate :
4/1/2000 12:00:00 AM
Abstract :
This article proposes iGSM: a voice-over-IP value-added service for the mobile network. The iGSM service provides user mobility to subscribers, which allows them to use either GSM handsets or H.323 terminals (IP phones or PCs) to access telecommunications services. We describe how the iGSM registration, deregistration, and call delivery procedures can be implemented without modifying the GSM network. We study how the tromboning effect in the standard GSM system can be avoided when accessing the IP network. Then we investigate the misrouting problem caused by user mobility
Keywords :
Internet telephony; cellular radio; protocols; telecommunication network routing; GSM handsets; H.323 terminals; VoIP service; call delivery procedures; deregistration; iGSM; misrouting problem; mobile networks; registration; tromboning effect; user mobility; voice-over-IP value-added service; GSM; IP networks; Internet telephony; Mediation; Personal communication networks; Protocols; Roaming; Telecommunication control; Telecommunication switching; Telephone sets;
Journal_Title :
Communications Magazine, IEEE
