Switzerland-based O-FONE (not to be confused with Microsoft’s oPhone) has released a SIP VoIP client for Symbian’s S60 platform. Perhaps more interesting than the client itself is their claim that ...

From a carrier's perspective, the turn to packetized voice has been touted as providing voice calls “too cheap to meter,” irrespective of the distance between caller and call recipient. The advent of ...

This is a user generated content for MyStory, a YourStory initiative to enable its community to contribute and have their voices heard. The views and writings here ...

Did Skype's total failure last holiday season get you worried? Are you tired of Skype's generally poor quality even at its free price-tag? Afraid of what Microsoft might do with Skype? According to ...

The Interactive Connectivity Establishment (ICE) draft, developed by the IETF’s MMUSIC working group, provides a framework to unify the various NAT traversal techniques. This enables SIP-based VoIP ...

Update: We're in the last throes of winter break 2019, which means most Ars' home office phones can stay dormant for a few more days. As such, we've been resurfacing a few classics from the ...

In Part 1 of our SIP primer, I covered the SIP foundation layers starting from the message structure and ending with the SIP transactions. We saw how phone registrations and proxies could work using ...