Hello, try: $(ru{uri.param,user}{s.substr,3,0}) Cheers, Daniel On 11/13/13 12:13 PM, Oliver Roth wrote: -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio Advanced Trainings - Berlin, Nov 25-28 - more details about Kamailio trainings at http://www.asipto.com -

Hi Oli, On 11/13/2013 06:13 AM, Oliver Roth wrote: Hi Oli, The string you are operating on is called the Request URI, which is exposed by the $ru pseudovariable. The best way to extract it is to use the transformations[1] specifically for extracting URI parameters, which is what 'phone' is: $avp(user_id) = $(ru{uri.param,user}); If you want '10824' rather than CSC, you can extract a substring: $avp(user_id) = $(ru{uri.param,user}{s.substr,3,0}); -- Alex [1] Operations on strings and message parts: http://www.kamailio.org/wiki/cookbooks/4.0.x/transformations -- Alex Balashov - Principal Evariste Systems LLC 235 E Ponce de Leon Ave Suite 106 Decatur, GA 30030 United States Tel: +1-678-954-0670 Web: http://www.evaristesys.com/, http://www.alexbalashov.com/