[Asterisk-Users] Connecting a Grandstream Handytone 486 to Asterisk

[Dovid Bender]

> 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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