My company just recently purchased a Asterisk system. We have set it up with high availability, it was done by a 3rd party integrator. There are stability issues for our SIP clients.
My question is that upon checking, I found out the version installed was version 11 and not the latest version 15. When confronted, the integrator informed us that version 11 is the most tested and stable version for high availability.
Can someone in this community advise if what they said is true? I can’t believe it is so.