WIRELESS NETWORKS

Wireless networks are evolving from today’s circuit-switched technologies toward packet-based 3G wireless networking standards. 3G wireless networks will provide an open, all-IP infrastructure allowing wireless carriers to offer a myriad of new enhanced services to their subscribers. This will drive up average revenue per user (ARPU) and increase the stickiness of a carrier’s offerings. The two most common 3G wireless standards are:

IP Media Servers in Wireless Networks (PDF 835 KB)

• W-CDMA, which is being evolved from today’s GSM standards by the 3GPP.
• CDMA2000, which is being evolved from today’s CDMA standards by the 3GPP2.

Media servers are an important part of wireless networks, as they are in all networks offering voice and multimedia services. In the 3G architectures, and in the wireless world in general, an IP Media Server supports the Multimedia Resource Function Processor (MRFP) in the IP Multimedia Subsystem (IMS) of a packet-based 3G wireless network.

Convedia Media Servers in an
IP Multimedia Subsystem (IMS) Architecture

Multiple call agents, such as the Serving Call State Control Function (S-CSCF), or Application Servers (AS), can control a single Convedia Media Server simultaneously using different protocols such as SIP/VoiceXML, MGCP, and MEGACO. As well, the media server can be deployed at the edge of the network, in the core of the network, or in a combination of the two, depending on factors such as traffic volume and the cost of carrying traffic across the network.

Wireless Service Solutions

Convedia Media Servers provide an optimized multiservice voice and video packet processing platform for supporting a broad range of enhanced service solutions including push-to-talk, ringback tones, unified messaging, pre-paid card services, multimedia conferencing, and a variety of special wireless services such as information and location-based services. All these services make use of a media server for processing audio and video streams: