We are using VoIP and Phone landline service provider to make calls.
In order to make a call you need to dial 0 or 9 before the phone number in order to specify which line you are going to use.We dial 0 at the beggining of the number to use VoIP and 9 to use the Landline service provider.
My question is:
How to construct a list in order to make the devices chose the cheapest way first if available and then the second option?
There is cheapest way routing in CallManager. You can only do dial patterns. If the dial pattern matches xyz, then push it out this Route .
Most people use dial patterns for local calls. Such as if my office was 408 area code, and my co-workers keep dialing 408, even though it's a local call, I would have the dial pattern strip the 408 and push it out.
There are cost vs route or dial pattern in callmanagers
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