Hi Felix,
Am Mittwoch, den 16.02.2011, 12:47 +0100 schrieb Felix
Dong:> Hi guys,
>
>
> the function Echo() did work on CAPI, but doesn't work for SIP
> connection. Can anybody help?
> thanks a lot.
are You trying to echo between local phones or is it a external call via
some VoIP Provider?
In latter case: do You forward the RTP traffic from external to Your
asterisk? The relevant ports can be configured in rtp.conf. Configure at
least 4 ports per connection. Configure port forwarding for this range
of UDP ports in Youe NAT-device (e.g. router or firewall).
HTH,
Karsten
>
>
> best regards,
>
>
> Felix
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