Enable, disable, set and check a forwarding for a DID

This example is written for the Canistracci OIL tenant. Create the objects with a Docs Demo prefix, test them on non-production numbers, and then adapt the same structure for the production tenant.
You can configure the management of the forwarding for a DID using an IVR. The management can be done using a different DID, but let's do with the same DID, just to make things more complex.
Let's start from a very simple configuration, where the DID is pointed to a Queue. We'd like to forward this DID to an external number in case of needs, with the ability to set the external number.
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To accomplish all the feature we need, an IVR accepting the several options will be needed:
1) activate the forwarding on the DID
2) deactivate the forwarding on the DID
3) play the forwarding number configured
4) set a forwarding number
The key to having this working will be to use a variable to hold the forwarding number. So we are going to create one, named "FORWARDNUMBER"
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To set the forwarding number we need to create a small media file to ask for the forwarding number and then read and store the number in the variable using a custom destination
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To play the forwarding number we can use another custom destination
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To activate and deactivate the forwarding, we'll use the embedded special destination
We need now to create a custom destination to forward the call to the number contained in the variable, using the Forward To custom destination:
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Let's organize all in the same IVR
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Now, we can assign this DID to the IVR, but before we need to hide it, so it can be triggered when needed. We'll create a "Please wait while we connect to your destination" message and while this message is played, we'll read a pin code. If that is the correct one, the IVR will be activated, otherwise, the usual destination will be connected.
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Let's see how the DID is now configured:
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The resulting diagram will be
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Canistracci OIL example screen for Enable, disable, set and check a forwarding for a DID.
Validation
Confirm the tenant selected in the top bar is Canistracci OIL before creating the example.
Verify the created objects appear in the expected Configuration menu page.
Place a controlled test call or run the related status check.
Remove or disable temporary test numbers when the example is no longer needed.