IMS PoC System is the Juphoon's compliance with the OMA PoC, XDM, Presence regulate the use of an ordinary mobile phone application service PTT intercom system, the full name is the IP-Multimedia-Subsystem Push-to-Talk-over-Cellular System. Push to Talk service is the use of IP technology to achieve a "point" and the "multipoint" voice communications services, using half-duplex communication mode, that is, at the same time only one person can speak in order to facilitate group communication, user experience similar to the the traditional walkie-talkie, but supports more than traditional walkie-talkie feature-rich and has much broader coverage of the distance.
IMS PoC Service End to End Solution
JPoC (Juphoon PoC) that contains the IMS UE and IMS AS (IPS) end-to-end total solution. Which, UE, and IPS to comply with the interface between the OMA PoC Service Interface Specification. The agreement includes below protocol standard: • Based on UDP / TCP to SIP protocol for session control • Based on HTTP, XCAP protocol for user-related XML document management • Based on UDP RTP and RTCP protocol for users to carry voice data stream and voice control
JPoC solution able to access any line corresponding protocol specification version of the OMA PoC terminals, including third-party Support OMA PoC-standard mobile phones, PC terminals or other forms of embedded terminal.
IMS PoC System Architecture
• PoC Server: To provide PoC session control and management functions, Media flow control, negotiation and transfer functions, voice control function, the implementation of access control policy, providing PoC-related XML document management functions, providing billing information etc functions.
• Media Server: Media handling mechanism available, including voice and video channels, Media Broadcast and Media storage and other value-added services
• Presence Server: For receiving, storage and distribution of PoC Client for Presence Information
• XDM Server: Used to manage contact lists, PoC session is black and white lists, PoC groups and authorization rules for XML documents
• Register Server: For user registration and authentication, if it is an independent system mode, then only through the interaction with the HSS fast registration service. AS if, as access to IMS core network, Register Server that is, a proxy module, connected to the public authentication Server for user registration and authentication
• HSS: Mainly to the Register Server, PoC Server, Presence Server provides user information management. If it is, as AS access to IMS core network, HSS that is, a proxy module, through the Diameter message to the public to interact with HSS Module
OMA PoC Service Deployment
JPoC provide end to end solution either as an independent system works, you can also access to IMS core network as a dedicated PoC Application Server. If, as an independent system, the terminal can communicate directly with the Server, registered with the local user database authentication and so on. If access to IMS core network through the SIP, XCAP, Diameter, and network management protocol with the Proxy (such as the P-CSCF, Aggregation Proxy), BOSS, network management, public Authentication Server, Shared XDMS third-party network elements such as docking.
PoC Server Features:
- PoC Server
• Support Ad-Hoc, Group, Pre-Arrange etc session management • Support session status subscription, talking priority setting, answer mode control etc management • Support instant user alert, group advertisement • Support small and medium volume session management (100 - 5,000 concurrent sessions)
- PoC Operation and Maintenance
• Support web management • Support service configuration • Support user profile configuration • Support session statistics, trace ect management
- PoC Chairman Center
• Support the Chairment Group message advertisement • Support Chairment Ad-Hoc, Group etc session management • Support user sessions real-time management, scheduling
- Simple S-CSCF Server
• PoC Server deployed with an independent • Support small and medium-capacity user registration and management (100 - 50,000 user profiles) • Support HTTP Digest / AKA authentication mode
- Simple HSS Server
• PoC Server deployed with an independent • Support user provision management • Support small and medium-capacity user management (100 - 50,000 user provision management)
- Media Server
• PoC Server deployed with an independent • Support small and medium-capacity Media data forwarding capability ( 100 - 10,000 channel media transfer capacity)
- Presence Server
• Support contact information on subscription Presence • Support contact Watcher Info Information Subscribe • Support Event List Event Subscriptions • Support MESSAGE, MSRP, etc. IM capability
- XDMS Server
• XCAP Directory XDM management • Resource List XDM management • PoC Group and Rule XDM management • Presence Rules XDM management • RLS-Service XDM management
