Mobile VoIP allows the user to make free calls between VoIP users and cheap phone calls to any person around the world. VoIP mobile service reduces mobile bills tremendously as the user has to pay for the internet only. The user can now make voice calls or video calls from his home, office or public places. In order to connect a mobile phone to VoIP service, the mobile phone should have an access to the internet, through 3G or WiFi wireless system.
How mobile VoIP works:
VoIP mobile phone calls are routed through internet instead of traditional mobile phone service. Whenever the mobile phone is in the range of wireless network, it recognizes that network and automatically connects to that wireless network. If the mobile phone is out of the range of wireless network, then calls are switched over to service provider who charges the user for that call. VoIP mobiles depend on SIP and UMA technologies. SIP (Session Initiation Protocol) is a standard technology which is used in VoIP technology, which is now implemented with mobile communication system. UMA (Unlicensed Mobile Access) technology is designed to make VoIP work with GSM (Global System for Mobile communications) phones.
Requirements for mobile VoIP:
To use VoIP service the user requires a mobile device, VoIP service provider, wireless network and client software which is usually provided by VoIP service provided. High speed internet is recommended with SIP client and a wireless network such as WiFi, WiMAX, HSDPA or EVDO rev A. Another method to connect mobile VoIP is through soft switch such as a gateway, which acts as a bridge between RTP, SIP, and the mobiles network. With this connection, CDMA or GSM mobile devices can be managed through SIP server. Advanced SIP services are also available through few VoIP providers.
Features of mobile VoIP:
Some of the basic features of mobile VoIP are:
• Mobile VoIP calls
• Mobile VoIP video and conference calls
• Find locations from mobile
• Instant messaging
• Free VoIP to VoIP calls
• All mobile and VoIP features
There are lots of VoIP services and mobile phones available with latest technology, features and trends, hence research before you purchase new VoIP phone or select a VoIP service provider.