[Asterisk-Users] Re: 20 seconds til voice transmission starts

[Cornelius Suermann]

I solved this issue by replacing the router (Netgear RP 614) with a 
newer model (Netgear DG 834 B). It seems the old router had occasionally 
problems to forward the UDP-ports to Asterisk. However, I'm glad 
everything works now! Thank you for your help!

Regards, Lius

>> I'm experiencing a strange problem with my Asterisk. I hope you can help:
>>
>> Asterisk is running at my company behind NAT. Ports 5060 and 10000-20000 
>> are being forwarded to it. I have put the router's external IP-address 
>> into externip in sip.conf. At home I'm using an AVM FritzBox Fon WLAN 
>> 7050 which is registered with the Asterisk at my company.
>>
>> When I try to call Asterisk (or a phone connected to the attached 
>> legacy-pbx) from home, it's ringing normally and I can hear my opposite. 
>> But it takes about 20 seconds until my opposite hears me! When I call 
>> the same number again staight after, everything is working fine from the 
>> beginning. Also, calls from the company to my home are working perfectly.
>>
>> I'm greateful for any tips!
>>     
>
> One way to identify the issue is to run ethereal to see what's happening
> with the udp ports. If that doesn't provide a clue, then run asterisk
> with additional levels of debug/verboseness.