Hi: I just installed wesip application server and 1.3.0-pre1-notls with seas.so modules. I also downloaded ringtone-24_05_07.sar application into path $WESIP_ROOT/wesipapps. Ijust configed openser.cfg and server.xml especially for those key property such as com.voztele.javax.sip.SER_ADDRESS, listen_sockets. The openser.cfg was mainly copied from http://www.openser.org/docs/modules/1.3.x standalone script. It seemed that openser and wesip server started correctly. Then I have the following test: 1. UA1 register to openser 2. UA2 register to openser 3. UA1 call UA2 through openser 4. UA1 ringing, received 100 trying, no 183 with SDP Can anyone tell me how to use ringtone applicaton? Any config should be done with ringtone application? Or my setup was wrong? Thanks in advance. Best Regards, Chen Xueqin