This article introduces the Push-to-talk over Cellular( PoC) service, a new mobile value-added service based on the IP Multimedia Subsystem (IMS). Its implementation scheme is discussed and its Session Initiation Prot...This article introduces the Push-to-talk over Cellular( PoC) service, a new mobile value-added service based on the IP Multimedia Subsystem (IMS). Its implementation scheme is discussed and its Session Initiation Protocol (SIP) signaling exchange flow is described. Target user groups are predicted based on the analysis of the strengths and weaknesses of the PoC service. The article purports that the PoC system could undoubtedly be used as a platform for new services such as multimedia messaging, instant messaging, presence, and picture receiving and sending. Just like the short message service, the PoC service will help the terminal vendors, equipment vendors, content providers and operators setup a win-for-all industrial value chain.展开更多
A solution is proposed to implement interactive Internet Protocol Television (IPTV) services in the Internet Protocol Multimedia Subsystem (IMS) network. The solution enables the IPTV system to access the IMS core net...A solution is proposed to implement interactive Internet Protocol Television (IPTV) services in the Internet Protocol Multimedia Subsystem (IMS) network. The solution enables the IPTV system to access the IMS core network via the Mw interface provided by the HTTP Call Session Control Function (H-CSCF),fulfilling converged networking of IPTV and IMS services. It allows operators to offer IPTV services in IMS-based converged networks without upgrading and modifying the existing IPTV terminals. Moreover,it enables unified subscriber management and guaranteed Quality of Service (QoS),and supports the convergence with other NGN services. Based on this solution,IMS operators can offer IPTV services or IPTV-based converged services through an IMS architecture; IPTV operators can implement networking of IPTV and IMS by updating and modifying the core equipment,to reduce operational costs.展开更多
ZTE Corporation announced on April 16, 2009 that it has partnered with Sichuan Telecom to successfully establish the first IMS-based EV-DO Video Telephony (VT) call in China.
文摘This article introduces the Push-to-talk over Cellular( PoC) service, a new mobile value-added service based on the IP Multimedia Subsystem (IMS). Its implementation scheme is discussed and its Session Initiation Protocol (SIP) signaling exchange flow is described. Target user groups are predicted based on the analysis of the strengths and weaknesses of the PoC service. The article purports that the PoC system could undoubtedly be used as a platform for new services such as multimedia messaging, instant messaging, presence, and picture receiving and sending. Just like the short message service, the PoC service will help the terminal vendors, equipment vendors, content providers and operators setup a win-for-all industrial value chain.
文摘A solution is proposed to implement interactive Internet Protocol Television (IPTV) services in the Internet Protocol Multimedia Subsystem (IMS) network. The solution enables the IPTV system to access the IMS core network via the Mw interface provided by the HTTP Call Session Control Function (H-CSCF),fulfilling converged networking of IPTV and IMS services. It allows operators to offer IPTV services in IMS-based converged networks without upgrading and modifying the existing IPTV terminals. Moreover,it enables unified subscriber management and guaranteed Quality of Service (QoS),and supports the convergence with other NGN services. Based on this solution,IMS operators can offer IPTV services or IPTV-based converged services through an IMS architecture; IPTV operators can implement networking of IPTV and IMS by updating and modifying the core equipment,to reduce operational costs.
文摘ZTE Corporation announced on April 16, 2009 that it has partnered with Sichuan Telecom to successfully establish the first IMS-based EV-DO Video Telephony (VT) call in China.
