Thank's for the tip. Registering SJ Phones to the server I've seen that my application was registering to it in a wrong way. I had in User and Contact URI the same IP address, and that was generating the loop. If User has the IP where the server is located, and Concat Uri the IP where my application ...

1. Brekeke Product Name and version: Brekeke SIP Server (2.0.7.2/217) 2. Java version: 1.5.0_12 3. OS type and the version: Windows XP 5.1 4. UA (phone), gateway or other hardware/software involved: trial UA and SJ Phone 5. Select your network pattern from http://www.brekeke-sip.com/bbs/network ...