Hi Benny, In fact I didn't need to change much. After getting the latest svn version I only changed the file sip_config.h where I changed the definition of PJSIP_HAS_DIGEST_AKA_AUTH from 0 to 1. Then I use the following configuration: acc_cfg[0].id = pj_str("sip:yoursipurl at sipserver"); acc_cfg[0].reg_uri = pj_str("sip:sipserver"); acc_cfg[0].proxy[0] = pj_str("sip:sipproxy;lr"); acc_cfg[0].proxy_cnt = 1; acc_cfg[0].cred_count = 1; acc_cfg[0].cred_info[0].realm = pj_str("*"); acc_cfg[0].cred_info[0].scheme = pj_str("digest"); acc_cfg[0].cred_info[0].username = pj_str("yourusername"); acc_cfg[0].cred_info[0].data = pj_str("yourpassword"); acc_cfg[0].cred_info[0].data_type = PJSIP_CRED_DATA_PLAIN_PASSWD | PJSIP_CRED_DATA_EXT_AKA; app_config.acc_cfg[0].cred_info[0].ext.aka.k = pj_str("yourpassword"); app_config.acc_cfg[0].cred_info[0].ext.aka.cb = &pjsip_auth_create_aka_response; This was enough to solve my problem. Hope it helps. Relating the issue I told you about in the last e-mail I forgot to mention that the my dns is correctly configured in /etc/resolv_conf. Still if I configure the proxy's address with the IP address it works fine but if I use its url it doesn't register. Any idea what could be wrong? Best regards, Jorge Amador Quoting Benny Prijono <bennylp at pjsip.org>: > Hi Jorge, > > that's good news! Would you mind sharing your configuration to us? I > wanted to write a small doc on configuring PJSIP to work with IMS, but > unfortunately I forgot most of the settings. :D > > cheers. > -benny > > On 2/7/08, jorge.amador at withus.pt <jorge.amador at withus.pt> wrote: >> Hi everyone, >> >> Thank you all for your hints. I'm now able to register to the P-CSCF. >> I had to get the latest svn version and use aka authentication as well >> as loose routing. Still I have a curious situation going on. If I >> configure the proxy's address with the IP address it works fine but if >> I use its url it doesn't register. In both cases I configure the >> server's address with its url. Any clue what might be wrong? Best >> regards, >> >> Jorge Amador > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >