You don't.  You just send an invite in the form of sofia/profile/number@ip

/b

On Jan 13, 2010, at 10:38 AM, John wrote:

I'm am attempting to use Voipinnovations.com (M2Tel) as a SIP provider. 
They do not utilize username/password; how would I go about creating a 
gateway entry for them without username/password? Thanks