Have you run a pcap at both ends?

Sent from my iPad

> On Apr 9, 2018, at 12:24 AM, Paul Stewart <[email protected]> wrote:
> 
> I would add that when SIP ALG is on with some routers it breaks things too … 
> point being to try it both ways ☺
>  
> From: Af <[email protected]> on behalf of George Skorup 
> <[email protected]>
> Reply-To: <[email protected]>
> Date: Sunday, April 8, 2018 at 5:29 PM
> To: <[email protected]>
> Subject: Re: [AFMUG] OT SIP issue
>  
> What kind of router/firewall are you working with? No audio is usually a SIP 
> ALG thing. You need the ALG on to rewrite the SIP headers when behind NAT.
> 
> On 4/8/2018 2:30 PM, Chuck McCown wrote:
> Tried both ways, no joy.
> 
> Sent from my iPhone
> 
> On Apr 8, 2018, at 1:23 PM, Forrest Christian (List Account) 
> <[email protected]> wrote:
> 
> Are they behind nat?
>  
> Sounds like it might be a reinvite issue, asterisk will try to get out of the 
> audio path by telling the endpoints to talk directly to each other.   If nat 
> is involved asterisk will often tell the endpoints to talk directly even if 
> they have no direct connection between them.
>  
> Disabling reinvite may help if this is the case.
>  
> On Sun, Apr 8, 2018, 11:27 AM Chuck McCown <[email protected]> wrote:
> Pulling our hair out.  The Aastra phones will call each other, we can send 
> dtmf but no audio.  Linksys sip ata does the same thing.  These were working, 
> very frustrating. 
> 
> 

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