Company I'm with has VeloCloud SDWAN implemented via 'Edge' devices at all of our locations. New to the company and new to Velocloud, my experience is as a voice engineer so I really don't know much about the current setup beyond that.
We have two CUCM clusters utilizing multiple cubes for centralized SIP. We are having an issue where numerous sites report intermittent issues such as: Multiple calls ringing in at the same time from the same caller, call comes in, they go to answer and it drops, call comes in they go to answer and get one way audio, etc.
Seems to be limited to inbound from what I've seen, and is intermittent. (of course).
Other voice guy whose been here awhile seems to believe issues started cropping up with the rollout of Velocloud.
Googling the symptoms, they seem to fall in line with what is often reported when SIP ALG is on, though usually with hosted voip solutions - haven't found much in regards to what it would do with an on prem solution.
I looked on the VMware website to try and find anything about SIP ALG or helpers but didn't see much.
I've pulled some calls from RTMT and threw them in translator x, I don't see anything obvious that stands out, but most of my experience has been with H323 GW's using POTS/PRI, am not a SIP expert by any means. Everything I've seen seems fine. Normal call clearing codes - Codec negotiation seems to go fine, not seeing any send only's in SDP's, etc.
Figure it's probably a shot in the dark but has anyone experienced something similar with VeloCloud and CUCM or another on prem solution?
Alternatively, does anyone have advice on where to start looking first?
Any assistance would be greatly appreciated.
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