Method #1
Situation: host A is the server which has a normal user added for us, and we want to connect our host B as a client.
Host A’s sip.conf has this entry for the normal user:
1 2 3 4 5 6 | [testuser] type=friend secret=abcd host=dynamic context=foo qualify=yes |
Because the host is defined as dynamic, we have to register with our client. Add this to our host B’s sip.conf (to the [general] section):
1 | register => testuser:abcd@hostAipaddress |
And add this to the bottom of sip.conf:
1 2 3 4 5 6 7 8 | [testuser] type=peer username=testuser secret=abcd host=hostAipaddress context=incoming callbackextension=cba ; this extension will be called on host B when host A calls testuser qualify=yes |
This way we can call any extension on host B (in host B’s foo context) like this:
1 | exten => 123,1,Dial(SIP/${EXTEN}@testuser) |
Note: ${EXTEN} will be replaced with 123.
We can only call host B’s cba extension from host A using this method.
Method #2
Situation: we want to call any extension on host B (in the specified context) from host A and vica versa.
Add this to host A’s sip.conf, to the [general] section:
1 | register => testuser:abcd@hostBipaddress |
And this to the bottom of host A’s sip.conf:
1 2 3 4 5 6 7 | [hostA2hostB] type=peer username=hostA2hostB secret=abcd host=dynamic context=foo qualify=yes |
Add this to host B’s sip.conf, to the [general] section:
1 | register => testuser:abcd@hostAipaddress |
And this to the bottom of host B’s sip.conf:
1 2 3 4 5 6 7 | [hostA2hostB] type=peer username=hostA2hostB secret=abcd host=dynamic context=bar qualify=yes |
This case we can call any extension in host B’s bar context from host A, and any extension in host A’s foo context from host B using a command like this:
1 | exten => 123,1,Dial(SIP/${EXTEN}@hostA2hostB) |
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