FreeSWITCH mid-registering for Fun, Profit, Scale and Push

" summary

Explains how to scale SIP user registration by placing a mid-registrar (example: OpenSIPS) in front of FreeSWITCH so the proxy handles high-volume registration transactions and only passes minimal reachability/location info to FreeSWITCH. Covers forking calls to multiple registered endpoints (deskphone, smartphone app) and using push notifications to wake mobile apps. Notes that the same mid-registrar techniques apply to other SIP proxies such as Kamailio or Repro.

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