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SIP Voice calls failing after 15 minutes.

Question asked by Expert on Oct 19, 2017
Latest reply on Oct 24, 2017 by mtran

Experiencing an issue with a LifeSize Icon unit registered to a Telviva hosted SIP PBX disconnecting voice calls after 15 minutes.  Enabling ALG on the local router seemed to help but need to understand why this would be.  I do not need to enable ALG for any other SIP devices.