2. Manual edit the registersip=no in user.conf
3. Add register string in [authentication] in the sip.conf:
register = 588012345:secretpassword@@sip.etelephone.cn:10002/588012345
SIP Settings
SIP Port: 10002
...
Proxy and Registration
Proxy: net263.com Use Outbound Proxy: yes
Outbound Proxy: sip.etelephone.cn:10002 Use OB Proxy In Dialog: yes
...
Two alternatives for better bridge between HK & mainland:
1. Bridging thru ET263.
Which sounds promising. The only remaining problem is ET263 doesn't work at IP01 for me. The solution might be mainland=>HK Obi110(SP1)=> HK Obi110(SP2) => IP01. Might be better to ask ATCOM for technical support.
2. VPN.
VPN by two simple DD-WRT routers. Wondering if anyone has implemented this?