ata message: sip nat typ: (hotel-)firewall blocks udp
 

Hi,

still I am registered, and still have no sound.
Just saw that my voip-cellphone (did not believe that it is so smart in error detecting!) tells me: SIP NAT TYP: FIREWALL_BLOCKS_UDP

Does anybody has an idea how manage to pass block?
I'll talk tomorrow to the hotel, but I don't believe they would know what to change.

I tried various setups so far, but I always get the same behaviour.
I dial *600, I hear an initial lower ATA-beep, then a higher one that appears again after 10 and 20 sec - nothing else.
I tried:
- Stun yes/no (stun.eu.voxalot.com,80,20)
- RPORT yes/no
- Proxy yes/no (eu.voxalot.com)

Once without stun my ata told me No Stun Available, but it was registered, and my dialing of *600 etablishes the connection, but play the ata-beeps as scribed above.

By the way despite I set everything what I can to port 80, my ata keeps telling me sip is on port 80.
PRT audio Port I set to 81 and it is shwon to be set at port 81.

Anybody with any idea what I can try myself?
Thanks in advance,
Gooly