Daniel,
Have you considered posing this question on Sip-Implementors?
-- Alex
--
Alex Balashov - Principal
Evariste Systems LLC
Tel: +1-678-954-0670
Web:
http://www.evaristesys.com/,
http://www.alexbalashov.com/
Please be kind to the English language:
http://www.entrepreneur.com/article/232906