[Serusers] I beg you please help me: Radius messages

Hi everybody, I really need your help. Please someone help me. I have to modify the values in the parameters of radius authentication messages. The message below is my default message rad_recv: Access-Request packet from host 127.0.0.1:32797, id=191, length=206 User-Name = "33333(a)192.168.10.233" Digest-Attributes = 0x0a073333333333 Digest-Attributes = 0x01103139322e3136382e31302e323333 Digest-Attributes = 0x022a3433666663333939393362393134376561643630366537353961646535366534666536 6534303732 Digest-Attributes = 0x04147369703a3139322e3136382e31302e323333 Digest-Attributes = 0x030a5245474953544552 Digest-Response = "de5d4886be3f94e241b92b5bf160857a" Service-Type = Sip-Session Sip-Uri-User = "33333" NAS-Port = 5060 NAS-IP-Address = 127.0.0.1 Processing the authorize section of radiusd.conf modcall: entering group authorize for request 0 modcall[authorize]: module "preprocess" returns ok for request 0 modcall[authorize]: module "chap" returns noop for request 0 modcall[authorize]: module "mschap" returns noop for request 0 rlm_digest: Converting Digest-Attributes to something sane... Digest-User-Name = "33333" Digest-Realm = "192.168.10.233" Digest-Nonce = "43ffc39993b9147ead606e759ade56e4fe6e4072" Digest-URI = "sip:192.168.10.233" Digest-Method = "REGISTER" rlm_digest: Adding Auth-Type = DIGEST modcall[authorize]: module "digest" returns ok for request 0 rlm_realm: Looking up realm "192.168.10.233" for User-Name = "33333(a)192.168.10.233" rlm_realm: No such realm "192.168.10.233" modcall[authorize]: module "suffix" returns noop for request 0 rlm_eap: No EAP-Message, not doing EAP modcall[authorize]: module "eap" returns noop for request 0 users: Matched entry DEFAULT at line 182 modcall[authorize]: module "files" returns ok for request 0 modcall: group authorize returns ok for request 0 rad_check_password: Found Auth-Type DIGEST In here I want to modfy the User-Name`s value. It is now "33333(a)192.168.10.233" but I want to change it. Also I must change the Digest-URI = "sip:192.168.10.233" parameter`s value. Please help me about radius message modifications. Is it possible with avp_module, but how? Please help me please. I beg all you. Thank you Gokhan USLU