VOIP: you can take it with you

Om Malik reports that Vonage is developing a softphone voice-over-WiFi client.   They won’t be the first. Telesym offers voice over WiFi targeted at the enterprise market, SJ Labs offers a free softphone client, and Mobitus,
a spinoff of Canadian hotspot provider FatPort, just launched a VOIP
softphone offering.  But given Vonage’s customer base, brand, and
infrastructure, it’s uniquely positioned to make softphone service