[Serusers] SER registration to a SIP Service

[Narcis GRATIANU]

Hello !

My company currently uses SER to handle all internationl calls. 
Recently, we switched to another SIP VOIP service provider, that
requires from us to authenticate using an username and password in order
to send the calls to him. What configuration do i need to do in the
sip.cfg file for that ? His sip address is: sip.voipcom.ro, username is
"user" and password is "pass"   (without the "). 

Thank you !