lib.init(log_cfg = pj.LogConfig(level=1, callback=log_cb))
lib.create_transport(pj.TransportType.UDP, pj.TransportConfig(5080))
lib.start()

acc_cfg = pj.AccountConfig()
acc_cfg.id = "sip:1001@10.20.3.1:5060<http://sip:1001@10.20.3.1:5060/>"
acc_cfg.reg_uri = "sip:10.20.3.1:5060<http://10.20.3.1:5060/>"
acc_cfg.proxy = [ "sip:10.20.3.1:5060<http://10.20.3.1:5060/>" ]
acc_cfg.auth_cred = [ pj.AuthCred("*", "1001", "5050") ]

acc = lib.create_account(acc_cfg)
acc_cb = MyAccountCallback(acc)
acc.set_callback(acc_cb)
acc_cb.wait()
print "\n"
print "Registration complete, status=", acc.info().reg_status, \
  "(" + acc.info

Following registration.py and call.py examples here<http://trac.pjsip.org/repos/browser/pjproject/trunk/pjsip-apps/src/python/samples?rev=2171> I have developed my SIP client that works quite well. (case 1)when i check a right host the status respond quickly whether the status 200 OK or 401 Unauthorized. (case 2 ) and when the host was wrong it takes more time to respond and show the response massage that "status= 408 (Request Timeout)" it takes more than 30 second . how i can edit the time that take to show respond massage in case 2 ? it's mean how i can Reduce this 30 second to show the respond massage ? This is the registration code: lib.init(log_cfg = pj.LogConfig(level=1, callback=log_cb)) lib.create_transport(pj.TransportType.UDP, pj.TransportConfig(5080)) lib.start() acc_cfg = pj.AccountConfig() acc_cfg.id = "sip:1001@10.20.3.1:5060<http://sip:1001@10.20.3.1:5060/>" acc_cfg.reg_uri = "sip:10.20.3.1:5060<http://10.20.3.1:5060/>" acc_cfg.proxy = [ "sip:10.20.3.1:5060<http://10.20.3.1:5060/>" ] acc_cfg.auth_cred = [ pj.AuthCred("*", "1001", "5050") ] acc = lib.create_account(acc_cfg) acc_cb = MyAccountCallback(acc) acc.set_callback(acc_cb) acc_cb.wait() print "\n" print "Registration complete, status=", acc.info().reg_status, \ "(" + acc.info