Great question @RobC.
We were receiving calls from our users saying their initial calls would fail and they would have to redial the number and it would work. We then took a packet capture and it showed that the "Do not fragment" bit was turned on. For some reason, the Ubiquiti EdgeRouter Lites we were using were having a hard time processing the packet and so the initial call would fail.
We did not know if Meraki would've fixed our issue at first. This issue happened around the same time we were doing our trial of Meraki gear. We deployed the gear at a PBX site and a branch location and tested phone calls. When the issue did not occur, we got more test gear and tried more users making calls. When the issue did not occur, we knew it was a packet handling issue and that Meraki could handle it.
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