We set two (2) routing scenarios for the multilevel routing and performed the following steps.
For the 2 Virtual Numbers:
The configuration and routing structure looks like this:


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When the customers call "85230020723 and 85230020724 ", the greeting plays, and the waiting time last 90 seconds until the staff agent answers the call.
The voicemail is enabled for the customers to leave a message when the staff agents are unavailable to attend their enquiry.
Destination Types and Endpoints
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To complete the routing flow for 85230020723, you will need to add the Destination types and endpoints of your Destination ServiceGroup-A to ServiceGroup-C.
For 85230020724, you will need to add the Destination types and endpoints of Service Group - Customer Service Medical - A to Customer Service Medical - E.
Please repeat steps 2 and 3 for ServiceGroup-B, ServiceGroup-C and Customer Service Medical - A to Customer Service Medical - E Destinations.

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Service Groups created in your Destination are named MULTI LEVEL to Dummy#1 and MULTI LEVEL to DUMMY #2. Please do not delete these Destinations.

The first layer routing configuration is maintained in our backend to define this specific routing flow. Please contact your account manager if you wish to change the first layer routing settings for the Virtual Numbers 85230020723 and 85230020724.
You can change the voicemail greeting, the file's automatic deletion settings, and the routing conditions and destination types and endpoints of the dummy number generalidummy#1 and generalidummy#2 as your second layer routing.
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Please do not disable Voicemail in the settings. If you need to do so, please contact your account manager.
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Please keep the Percentage Routing as for the Routing Rules for the Second Layer Routing.

Example of Routing Rules % - Second Layer
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Keep the routing conditions and destinations of the first layer routing as it is.
Do not disable Voicemail and keep the Percentage Routing rule as it is for the second layer routing.
Any edits or changes made will make the whole multilevel routing fail. Please contact your account manager if you wish to change any of the routing settings.The system automatically picks up the call right after the call has been established and the greeting plays. This means the call usage starts even before the agent picks up the call.