Remote DECT

[davea2]

Hi

So we have a Server Edition hosted in the cloud (AWS) and a site with DECT with 3 base stations.
All works fine if the DECT handsets are connected to the master base, but if they are on one of the others, there is no audio.

Suspecting the obvious of RTP ports and NAT?

We have given each base it's own RTP port range and then port forwarded those ports to the appropriate base but still no audio.

Cannot find any documentation specifically for this, does anyone have any experience of this?

Would seem to be simple

Many thanks

 

[IamaSherpa]

Check the IPBSs firmware, I suppose they are not aligned, update it all to the latest one, eventually

 

[davea2]

They are all on 10.4.6 which I think is the latest?

 

[IamaSherpa]

The latest is actually v11p2p10 but if you don't have IPBS3 type don't care, even though you can upgrade them all if you need it. Using IPBS3 and non homogeneous firmware I had the same issue twice. So, if the secondary IPBS are in different networks maybe it's a RTP issue.
I have never had the needings to modify the RTP settings into the IPBS, it's ok the default.

 

[derfloh]

Probably the media is sent to the private IP of the slave base stations instead of a public IP.

I recommend to build a tunnel between the local network and AWS.

IP Office remote service
IP Office certificate check
CLI based call blocking
SCN fallback over PSTN

 

[techAR]

Try and see the codecs used, the RTP range for each, isolate each, and see it works, test all posibilities

 

[davea2]

We have testes pretty much everything we can think of, separating RTP ranges etc.

We do however have a spare Server Edition license on the system so was considering adding a local IP500 expansion on site and connect the DECT to that?

Either that or a VPN to AWS

 

[derfloh]

With a local IP500 and the DECT connected to that unit you will not be able to use internal twinning between a desk phone and the DECT endpoints. Keep it simple and use VPN.

IP Office remote service
IP Office certificate check
CLI based call blocking
SCN fallback over PSTN

 

[davea2]

Yes I set up a VPN yesterday as all seem good so far!