You should use 4.1 instead of 3.1, because 3.1 is really old (and no longer supported) version. Location table keeps attributes per username@domain. To get the attributes, you need the username@domain. The typical use case is when a SIP requests comes to the proxy targeting username@domain, you can use lookup("location") to get associated attributes for routing the request to where username@domain is having the phone. registrar is one of the modules using usrloc behind. Cheers, Daniel On 13/09/14 10:42, aawaise wrote: -- Daniel-Constantin Mierla http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Next Kamailio Advanced Trainings 2014 - http://www.asipto.com Sep 22-25, Berlin, Germany