Authors Mark Lindsey SMTS at ECG

Verizon vs. Vonage on patents -- consensus growing on "direct media" issue

Consensus is growing among some system implementors that Verizon's patents for calling to PSTN and VoIP endpoints is tightly coupled to "direct media". This article discusses the three claims on which Vonage was found infringing and how it relates to other hosted VoIP carriers, like those using MetaSwitch, Sylantro, or BroadSoft. US Patent 6,104,711, Claim 20 talks about making calls directly t...


Verizon vs. Vonage: We need some details!

Verizon sued Vonage in case 1:06-cv-00682-CMH-BRP in the US District Court of the Eastern Virgina region. Verizon has won, for now. As people who make VoIP work, the engineers and operators of VoIP systems need some actual useful information to work with to build networks that observe Verizon's patents. This posting is just an attempt to collect some of that info in a useful place. The web i...


VON no shows; fixed-mobile convergence; Skype mobile

VON trade show: the no-show list San Jose, CA -- The VON spring 2007 trade-show this year was notable for who was absent. Among the non-attenders: Cisco, Lucent, and Nortel. Sonus didn't have a booth, but they rented some meeting rooms. To be precise, Cisco was present in the logos of some literature in the Linksys booth, but the extremely popular Cisco SIP phones and AS5400 gateways were not ...


Two Ways to get VoIP Support

San Jose, CA -- I had wondered in the past whether GS did any VoIP engineering or support, and I got my answer yesterday at VON. I learned about IBM Global Services' Support for VoIP Systems. The Global Services VoIP support offering that I learned about is focused on supporting technical staff at enterprises. (NB: "Enterprise" is jargon for for any customer that's not a government, a carrie...


Is VoIP there yet?

Voice over IP is obviously big seller these days. Everybody wants to do it. But is VoIP really there yet? I mean, can you depend on it the way you rely on traditional telephony? There are some simple reasons to expect not: The systems are all very new. Joel Spolsky makes strong points that it takes about ten years for software to mature to being truly useful. The feature set is very ric...