windows mobile 6 pda phone voip over 3G

[giotai]

1. Brekeke Product Name and version:Brekeke SIP Server , Version 2.1.6.2 Standard

2. Java version:1.6

3. OS type and the version:win xp sp2

4. UA (phone), gateway or other hardware/software involved:HP iPAQ612 PDA Phone and O2 Autom life PDA Phone

5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/networkpatterns.html :

6. Your problem:I have two windows mobile 6 pda phone, open internet calling, use setup voip version 0.3 of schap's 2007 And Enable voip over 3G
The question used at present is
1.Do not have tone sound waited for to allocate
2.Voice sending end and listening to the other side is very small
Observation on sip server
Clients USER registration 1486
Why UDP PORT appearing in contact URI is not 5060, for example show for sip: 10.30.30.1:10996, and UDP PORT floats, it is different at the time of each registration, there is Request float equally, it should to be sip: 1486@10.30.30.1:5060 of contact URI

[Haddas]

Does the SIP Server replace the Contact URI?

add the following in the [Configuration]->[Advanced]
net.sip.replacecontact = false
net.sip.replacecontact.nat = false

so.. the SIP Server will not replace the Contact URI.