DAHDI audio problem with analog OpenVOX A400E FXO card

[dicko]

Impedance matching and 2-4 wire hybrid balancing against a standard milliwatt test will help

Echo and voice Clipping on external calls over a UK BT ISDN Channel

Hi, I’m hoping someone can point me in the right direction on this one - we have a FreePBX distro (2.11.0.11) running on an HP ML110 server. We have an OpenVox BE200E BRI card with the additional H/W E/C module loaded. Our phones are mostly Linksys SPA301/901 and reception staff have SPA962 with the 16 button sidecars - all running latest firmware. Two members of staff make and receive most of our inbound / outbound calls over a pair of BT ISDN 2e lines (4 channels) on two SPA962’s, and are bo…