I was hoping for some assistance on a possible QOS issue I'm having with a customer system.
SPECS: UC320 latest release firmware
The 320 is connected to one of the gigabit uplink ports on the SF302-08P switch. All phones have PC's attached to them.
The users are complaining of echo/jitter. I've logged into the phones they say are the worst and they show 0ms jitter and 0ms echo.
I've played with the QOS settings on the switch but haven't had any luck.
Does anyone have any ideas or possible settings changes that might resolve this? I'm thinking it may be the switch but that's just a guess.
Most of the time outside people can't hear the issue but it has happened. I've made a ton of test calls but it doesn't happen often enough for me to hear it so I have to go on what they are telling me. It's also why I'm thinking QOS because I'm not using their PC while I'm on a call.
Internally it's both ends.
This is not expected, especially on SPA phone to SPA phone calls. Is your switch running the latest firmware with the Auto Voice features enables (upgrade and factory default to the latest firmware to auto enable). Are your phones on the voice subnet (default is 10.x.x.x network)?
If the problem is just on calls over the FXOs, then suggest running the Impedance Matching tool for each port. This is found on the FXO page of the UC320W Configuration Utility.