In the fixed line world, the basic Session Initiation Protocol (SIP) has become quite popular for offering voice telephony service. Lots of companies such as Vonage, Siptel and DSL providers are making use of it today. So why are we not using SIP in 3.5G and 4G networks as well? I guess there are both … Continue reading How To Extend SIP For Mobile Networks
In cellular networks, the primary rule for voice telephony is efficiency, efficiency, efficiency. Translated into practice, this means that the mobile device patiently waits till it receives a paging for an incoming call or until the user wants to establish an outgoing call. In the time between, there is complete radio silence, except for occasional … Continue reading Breaking the Radio Silence with VoIP
Ever thought file sharing of others could have an impact on your mobile device’s runtime on a battery charge? If not, read on: For DSL connections I think it is quite the norm rather than the exception that subscribers are assigned a public IP address. In wireless networks things are a bit different. While some … Continue reading How File Sharing Of Others Drains Your Battery