Best Practice? Keep Alive / Registration Time

Grandstream VoIP
1

For many of my systems using UCM’s or FreePBX (cloud), I have never had to change the default phone settings (all grandstream) to ensure phones stay connected and can receive incoming calls…

I have one site that has intermittent issues (Unifi Dream Machine), with a Cloud UCM and Grandstream GRP phones, especially if the internet connection is lost for any amount of time. A simple reboot fixes the issue, but calls are missed, etc.

I can obviously go and tweak these settings and no doubt solve the problem, but thought I would ask if anyone has any “best practices” they use or set when they are deploying systems?

2

My experience has been if i’m using ANY devices off prem (be it phones or a cloud UCM of some kind, or a physical UCM on another site), I turn on keep-alive / OPTIONS on that because I dont trust routers to do what they need to do 100% of the time. Packets get lost / die. Locally I dont bother unless the customer insists on using their Planet POE switches or TPlink switches etc.