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Tijmen de Mes, 01/18/2016 10:51 am


SipDevicesCiscoSPA525G

This is the minimum config for Cisco SPA525G that allows me to send and receive SIP2SIP calls from behind a residential NAT.

Go to Voice / Ext 1 (or whatever extension it is) / advanced
- NAT mapping enable: No
- Proxy: sip2sip.info
- Outbound proxy: proxy.sipthor.net
- Use outbound proxy: yes (otherwise, won't register)
- User id: just your username (don't include @sip2sip.info)
- Use auth id: no
- Use DNS SRV: yes
- DNS SRV auto prefix: yes
- Register: yes (if you want to receive calls)
- Make call without reg: yes (if you want)