[Freeswitch-users] Freeswitch database polling

Hello, A question for curiosity: We use ODBC over MySQL to serve the FS core database. This database is replicated (by MySQL means) to a backup system which runs MySQL also. There is no cluster between the two, only one-way MySQL replication. The FS on on the other system shows an updated current status of all extensions registered (sofia status profile XXX). How does it do so? a timely update/polling of the database? If so, what is the interval, and doesn't it make much load on MySQL database when there are a lot of registered phones? Thanks! __Yehavi: