[asterisk-users] Re: Help - Poor Voice Quality

[Jim Duda]

Thanks for the reply Lacy.

Yes, I know that I am using IAX2 and not SIP for my connection to 
teliax.  IAX2 is the preferred protocol for connection to teliax.  I 
have the firewall configured to prioritorize port 4569 for IAX2.

I have the shorewall tcdevices file setup with 3 mbit download and 500 
Kbit upload speeds.

Jim

Lacy Moore wrote:
> Jim Duda wrote:
>> I've been on the shorewall firewall and confirmed that I have the
>> firewall configured properly for VOIP QOS.
>>
> What exactly have you done here?  You do know that you are apparently
> using IAX2 and not SIP.  Those are not the same protocols.  In fact, if
> you configured the shorewall system for standard VoIP, that's your
> problem.  IAX2 operates on different ports that SIP.  Whereas SIP
> operates on a control port and then create media ports, IAX2 only uses one.
> 
> As far as download speed, what have you told shorewall your download
> speed is?  I'm not familiar with it, but just guessing that it's
> probably like most others.  If this is the case, somewhere there is a
> setting to tell it what your download and upload speed is.
> 
> 500kpbs up doesn't seem like enough bandwidth to support 10Mpbs down,
> either.
> 
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