PBX to Landline

(Tom Mitchell) #1

we have Freepbx setup with Zulu as our softphone of choice, no physical phones using VOIP. When one of our users answers a call or makes a call to a user(not on our system) who is using a handset to call/answer (works fine with cell phone calls) our user can’t be heard, at most the person on the other side hears is the call cutting in and out. Any pointers as to what may be causing this?


So you’re saying ANY inbound/outbound calls to ANY land line has poor audio quality? But ANY inbound/outbound call to ANY cell phone (you’ve tried different carriers) is fine?

What are you using for your phone line service? SIP? analog? who is your provider?

(Tom Mitchell) #3


Provider is SIP trunks from SIPStation and we are using SIP. One caller specifically has had a lot of problems but this is also the caller that is on the phone the most. She has been able to narrow it down to always being an issue with land lines by attempting a call back to cell on the other end and it is fine.

We check jitter on her PC and it is 2-6 so our network / ISP seem to be fine?