This won't be that helpful but... are you sure the cisco is configured properly? I had quite a "fun" time figuring out all the different bits I needed to configure in a Cisco UC500 to allow SIP clients to register. A summary of things which were needed in the configuration: ! voice service voip sip registrar server ! voice register global source-address <IP address your cisco listens on for SIP> port 5060 authenticate register authenticate real 10.93.82.1 and for your sip client you'll need something like this: voice register dn 1 number <NN> allow watch name <blah> <blah> no-reg label <blah> mwi ! voice register pool 1 id mac XXXX.XXXX.XXXX number 1 dn 1 presence call-list dtmf-relay sip-notify username <uname> password <password> codec g711ulay The above roughly matches what I used. Having done the above I was able to register using pjsua. Good luck, Cisco SIP is fun! Jacopo Cappelli wrote: > ./pjsua-i686-pc-linux-gnu --id sip:2030 at 192.168.250.50 --registrar > sip:192.168.250.50 --realm "" --username 2030 --password 2030 > > The account is valid(if i use x-lite work correctly) realm is not set > X-Lite LOG > username="2030",realm="",nonce="0A5797F42E85D1CC",uri="sip:192.168.250.50",response="20551a77c1e80404c382be17b381212e",cnonce="6e5b9f754dcc0f98a2dfaaba99dad6e0",nc=00000001,qop=auth,algorithm=MD5] > passed > > If i use pjsua not see the log on call manager... > What's happen? > > Thanks very much, > Jacopo > > -- Jens B. Jorgensen jbj1 at ultraemail.net