On Sep 4, 2009, at 3:43 PM, Dmitry Bely wrote:

I'm started to suspect another thing.. Successful register (SIP phone) contains

REGISTER sip:Domain SIP/2.0

while unsuccessful one is

REGISTER sip:1.2.3.4 SIP/2.0

What parameter is responsible for Request-URI? Note that I need both
IP address for proxy and symbolic name for SIP domain (which is not
mapped the resolvable DNS name).