Chapter 5. How To Configure Advanced SIP
In this case, the calls should be forwarded to your SIP operator account that was defined before. You select the account under Account.
The calls can also be forwarded to your SIP operator using the operator’s IP address in the Replacement URI field.
At last, you combine these definitions in the Dial Plan table. Make one line for international calls and one for other calls, because we need to add the international prefix for international calls only.
Now, when a local user calls an external phone number, the Telecommuting Module will route this call to your SIP operator and rewrite the signaling to use your SIP operator account.
Authentication by IP Addresses a.k.a SIP Trunk via IP address
On the Dial Plan page, you define what type of calls should be redirected to your SIP operator. First, turn the Dial Plan on.
In the Matching From Header table, you define from which network the calls can come. You can also select what the From header (that tells who is calling) should look like. This is used when matching requests in the Dial Plan table below. Name each definition properly, to make it easier to use further on.
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