SIP server is behind NAT and in Dynamic internet IP env.

[b0307]

1. Brekeke Product Name and version:
Brekeke SIP server 2.1.6.6/239

2. Java version:
Java 6 update 3

3. OS type and the version:
Windows XP Professional SP2

4. UA (phone), gateway or other hardware/software involved:
X-Lite 3.0

5. network pattern
Pattern 4

6. Your problem:
SIP server side: Linksys Wireless AP (router) + ADSL Modem
Linksys Wireless AP (NAT router): dynamic internet IP (147.1.1.100), UTP5060/10000~20000 map to 192.168.1.00 already.
SIP server internal IP: 192.168.1.100
X-Lite soft phone-A is in the same network as SIP server's.
X-Lite soft phone-B is in the remote internet and NAT as well.
I set dynamic DNS name sip.mydomain.com in 'interface' item of SIP Server Configurateion Web.
X-Lite can register in SIP server and make call between 2 X-LITE if public internet IP address:5060 is configured as 'domain' in X-LITE. But it returns '503 service unavailable' if I set my dyamic DNS name, sip.mydomain.com in X-Lite.
How can I configure Dynamic DNS name in 'domain' item of X-LITE?

Thanks.

[b0307]

I solved this problem. RC maybe local host file. When I use the real DNS name which is registered in DNS server instead of adding entry in hosts file, X-Lite can register in SIP server.