Hey everyone, After quite a bit of google digging I've came across Dimitry's mail that cleared up some things that weren't so obvious in the documentation of the ACC module. He gave the example of using the following code: modparam("acc", "radius_extra", "Sip-UA=$hdr(User-Agent);Sip-Via=$hdr(Via[*]); Sip-SDP=$rb") Which in his case makes use of the Sip-UA, Sip-Via and Sip-SDP attributes but in the dictionary.sip file provided with openser/radiusclient-ng these attribute aren't present, there are other sets of attributes but not these... And so, I tried adding myself some custom attributes to both dictionary files, the one on the freeradius server and the other on openser's radiusclient-ng server and tried for example this: ATTRIBUTE Sip-Src-IP 900 string ATTRIBUTE Sip-Src-Port 901 string ATTRIBUTE Sip-Hdr-Contact 902 string ATTRIBUTE Sip-Hdr-UA 903 string ATTRIBUTE Sip-Hdr-From 904 string ATTRIBUTE Sip-Hdr-Media 905 string And then I put in openser's cfg: modparam("acc", "radius_extra", "Sip-Src-IP=$si") But it doesn't work, the accounting record on the freeradius server doesn't show the Sip-Src-IP attribute. If I change the modparam to use Sip-User-Realm which is defined in the original dictionary.sip on both servers then THAT IS added to the accounting record... my question is why? And the second question, is there a more extensive dictionary.sip file? How is it possible to add my own custom attributes as well? Thanks, Liri.