TIPS piaf-green on esxi 5.1 - robotic voicemail sometimes

[edisoninfo]

I spun up the piaf-green for esxi template released recently. No problems, came right up. Configured a few extensions for testing and the Google Voice trunk. Everything seems to work great except that once in awhile, when I listen to voicemail, I get a very robotic sounding voice and very slow. Sounds like a 33 rpm record played at 78 rpm. (sorry if I dated myself with that analogy!)

This system will have 15 sip trunks and 60 phones when it goes live. Best to abandon and go with a dedicated server? I hate to spend $$ if I don't have to. This client already has a three server (Dell PowerEdge R620, dual 6-core cpu, 96Gb ram) rack connected to a Dell MD3200 SAN. Seems a waste to not use it.

 

[MrBostn]

is the PIAF Disk on the SAN? Is the PIAF VM sharing it's NIC with high IO VMs?

 

[MrBostn]

Give it 4GB RAM it's own NIC and consider putting the VM on some type of DAS. My PIAF is on Hyper-V with 2GB RAM it's own NIC and local storage. Everything sounds fine.

 

[MrBostn]

Why the client has a SAN is another story. IMO local/DAS provided the best IO performance.

 

[edisoninfo]

Yes, the piaf disk is on the san. Non of the PowerEdge servers have hard drives in them. They boot from 2Gb SD cards. I can add a physical drive, give it it's own nic, etc. but that defeats the whole point of the VMware setup. With vMotion it will keep things going in case of a failure. I might as well just stick a separate server in the rack and be done with it.

 

[MrBostn]

From what I read robotic sounding recordings are related to timing issues and/or packet loss. Even though you're all SIP Check your dahdi_test results.

What RAID Level? If Jumbo Frames are enabled try turning them off. Are the NICs/Disks overloaded?

 

[MrBostn]

Also install VMware tools if you haven't.

 

[MrBostn]

For reference I'm running piaf green on Server 2012 as a Hyper-V guest. When I first was testing I had piaf on the regular network. When testing calls The phone the IP phone didn't ring, and things didn't sound right. I then put the PIAF on it's own network and things worked much better.