What symmetric NAT and RTP/UDP are???

laomedon

Hello,

I’ve downloaded ’’IVM Answering Attendant’’ and ‘’express talk’’ for my business.

I use a sip account;

I can call out going and receive calls ingoing with ‘’express talk’’.

But after I’ve entered my sip account (sip number, password, and proxy) in IVM Answering as for ‘’express talk’’, I received this message:

“A ‘symmetric’ NAT or router has been detected between this computer and the internet. This means audio cannot be routed to this computer automatically. You (or your Network Administrator) are strongly advised to manually setup RTP/UDP redirection at the router or NAT otherwise audio my be delayed, low or broken. See the manual topic “Networking” for more.”

And the outbound autodial calls don’t work. In bottom of the windows there is “Registered as: 33175431872@keyyo.net” and all the 10 minutes a sentence is rewritten “Unable to auto-detect public IP. Using private IP.