> Hello, > > I bought a Grandstream Handytone 486 to forward > incoming calls from our old analogue PBX to the > asterisk server. > > My first test was connecting an analogue phone to > the Handytone and calling a sip phone - worked. > Now I used the same cable to connect the line port > of the Handytone to the analogue pbx. When I call > the number of the analogue PBX I > hear a clicking inside, but the call doesn't get > forwarded to asterisk. I used tcpdump to see whether > the Handytone sends > data packages at all, but it doesn't. > Unfortunately the Grandstream support didn't answer > my support request. Does someone of you know how to > connect the Handytone to the asterisk server, maybe > I need a special cable? > > Thanks for any hints, > > Ralf > Is the device an FXO or FXS. From what it seems (that you are connecting a phone to it) that it is an FXS. This will not allow inbound calls from a PBX. You need an FXO.
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