1. Download X-Lite Free Here

    or go to CounterPath

2. Install

3. Advanced System Settings >> STUN Settings

    Discover Local IP Server: Empty

    Backup Discover NAT IP Server: Empty

4. System Settings >> SIP Proxy >> Default

    Enabled: Yes

    Display Name: Your Name

    Username: SIP ID

    Domain/Realm: 140.113.131.29

    SIP Proxy: 140.113.131.29

5. Success

    Show "Logged in" on X-Lite agent

6. Appendix: SIP ID

Keep-alive interval config (footnote at 20070525):

X-Lite 2.0 release 1105x only

Advanced System Settings >> SIP Settings >> Frequency to Send UDP Keep-alive Messages to Proxy(ms): default is 10000