Import phone number - Jambonz

Support integration with Jambonz, a platform used to manage multiple voice carriers. The feature should allow users to import and manage phone numbers from Jambonz through SIP connectivity. This enables seamless onboarding for businesses already leveraging Jambonz as their carrier orchestration layer.

Goal:
Provide flexibility for carrier management by supporting SIP-based number imports from Jambonz, streamlining integration for existing telecom setups.