[OpenSIPS-Users] OpenSIPS 3.1 & NAT issues

[Mark Allen]

Thanks Adrian

The firewall has SIP-ALG disabled and just forwards ports from externally
to where they need to be internally - so ports 5060 and 10000 - 65535 of
46.x.x.x are mapped to 192.168.x.x (the OpenSIPS box)

On Wed, 13 Jan 2021 at 17:32, Adrian Georgescu <ag at ag-projects.com> wrote:

> Google search for SIP ALG problem to see if this is relevant for your case.
>
> Regards,
> Adrian
>
>
> On 13 Jan 2021, at 13:08, Mark Allen <mark at allenclan.co.uk> wrote:
>
> Hi all - I've been banging my head against this but not succeeding.
>
> Our setup...
>
> UAC           192.168.x.x
>   |
> Router        5.x.x.x
>   |
> (internet)
>   |
> Firewall      46.x.x.x maps
>   |           directly to
> OpenSIPS      192.168.x.x      Mid-registrar
>   |
> Asterisk      192.168.x.x
>
>
> Current situation:
> - UAC can register on Asterisk via OpenSIPS
> - UAC can call destination registered on Asterisk on local n/w to Asterisk
> box
> - Destination extension rings and can pick up call
> - There is no audio either way & call drops after about 30 secs (Asterisk
> kills call with "Requested channel not available" because not RTP traffic
> is reaching destination)
>
> I have tried passing audio through Mediaproxy on OpenSIPS box but with no
> success. Using Wireshark I can see RTP traffic initiated at both ends, but
> it doesn't reach the other end either way.
>
> Is there some definitive guide to setting this up correctly or are there
> specific steps that I need to follow?
>
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