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GW0220
Userguide 2.0 UK
15
is different from SIP account)
Config the domain realm (Usually it is same with registered server and proxy
server IP address, Let it be blank)
Usually the option need to be selected, when you want to use SIP1.
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Set SIP protocol as the default . All call will pass by SIP ..
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4.6.2 IAX2 configuration