Elastic SIP Trunks can be configured with Forwarding / Fallback. Once set, if a call to one of the telephone numbers associated with a trunk cannot be completed over any of your SIP Endpoints (or in the event you have disabled/removed them) the call will immediately forward out to the number you have configured. To forward all calls simply create a trunk without any SIP endpoints, associate phone number(s) and turn on Forwarding. This option can be configured under the Inbound Call Settings on your trunk.
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Additionally, once this is enabled the route will display on your SIP Endpoints section. This provides a visible reminder that it is enabled and will be used as the route of last resort for your telephone numbers.
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