British Telecom Claims Patents on VOIP Session Initiation Protocol
An anonymous reader writes with bad news for operators of SIP gateways. From the article: "VoIP-to-PSTN termination providers and SIP vendors will be watching their inboxes for a lawyer's letter from BT, which has kicked off a licensing program levying a fee on the industry, based on a list of 99 patents .. The British incumbent is offering to allow third parties to use the Session Initiation Protocol under a license agreement... BT is requesting either $US50,000 or a combination of 0.3 percent of future revenue from affected products, plus 0.3 percent of the last six months' sales for products as 'past damages.' It's kindly offering a discount for customers that pay up within six weeks of receiving a BT letter of demand, and there's a premium to $US60,000 and 0.36 percent of revenue for those who hold out."
BT is just another failed Tory privatisation, retarding and overcharging for UK telecoms ever since. Its only redeeming feature is that it is set up by regulatory-captured Ofcom to be the less awful alternative to Murdoch and Branson's brands.
Ah, the true nature of competition where there is natural monopoly.
All ITSPs then should ditch SIP for PSTN trunking and move to support IAX2. A much simpler protocol and it goes through NAT like a knife through butter.
This is what is also known as a "submarine patent"
It lurks under the water while adoption builds.
Later on, the "submarine patent" surfaces and sues everyone.
Obama's legacy: (N)othing (S)ecure (A)nywhere and (T)error (S)imulation (A)dministration
I don't see BT's name associated with RFC 3261. When you work in an IETF Internet Standards Track working group, you're meant to declare any patent encumbrances that you may possess over the subject matter. That allows potential users to avoid it like the plague.