How do I scale a single Asterisk installation across multiple hosts?
There’s no simple, canned answer. As always, it depends on the precise application. What can be said with certainty is that it can be done. To the extent that it is possible to formulate an answer in general terms, it generally revolves around the following two initiatives: • Front Asterisk with a SIP request distributor/load balancer proxy, and possibly other outboard components (such as a dedicated standalone registrar). • Find ways to genericize functionality executed on one host so that it can be distributed across multiple hosts; this typically means centralizing some of the logic.
