We have a site which has a 10Mb (up and down) circuit using a Watchguard x330 running 11.6.1 software.
We are using Virtual Office solution from 8x8 which is a hosted SIP PBX solution.
Problem is that users complain of call quality issues.
At the moment I have setup 'Traffic Management' which uses a firewall rule and allows you to allocate/dedicate bandwidth, so I've set aside 512Kbps (10 users at site, maybe 6 calls active at once top) so this should be totally overkill.
8x8 says that if I can't disable SPI on the firewall, then they recommend a second firewall/gateway that doesn't use SPI, and point all phones to it. I can do that, but I'd like to investigate further before we go that route.
I've noticed also that on Watchguard there is a SIP ALG which is equivalent to a Cisco Fixup Protocol, but I think that just facilitates opening of ports, not prioritizing traffic.
Anyone have a Watchguard device working well with SIP protocol (8x8 is one, Skype also uses SIP)
Your help is appreciated.