[asterisk-users] One way Speech issue - only in PAP2T to SIP device attached to Asterisk but not PAP2T to Voip service provider

[Stefan Schmidt]

Shaun schrieb:
> Hi All, 
> 
> This is puzzling me greatly. 
> 
> The setup: PAP2T over ADSL registers to Asterisk 1.4?using SIP. Attached to Asterisk are SIP clients. Codec throughout G729 (only have 1 license on Asterisk server loaded though). When calling the SIP clients from PAP2T I can't hear them but they can hear me. 
>  
> If I call from PAP2T through Asterisk using?IAX2 to a VOIP provider there is speach in both directions! 
>  
> Any suggestions? 
>  
> Thanks Shaun
> 

check your firewall/nat settings.

If your setup will work for around 5 minutes after you have rebooted the 
pap2t then you have to active the nat keep alive and nat mapping service 
  in the pap2t.

best regards

steve smith