[Asterisk-Users] dtmfmode and IAX protocol

[Joseph]

On Fri, 2005-02-11 at 10:15 -0500, Mark Eissler wrote:
> There's enough information if he's using FWD's 8XX-gateway for his 
> toll-free calls to UPS, the bank, etc.
> 
> First of all, if the wiki says "inline" (yes, okay, it does) it 
> probably means as inline data as opposed to "inband." But the fact is 
> that iax2 ALWAYS sends DTMF out-of-band.
> 
> While it's true that some VOIP phones (SIP adapters, etc) can be 
> configured to send DTMF inband, I would think that doing so while using 
> IAX is going to result in digits being reproduced twice at the 
> destination--once from the DTMF reproduced from out-of-band and once 
> from the inband DTMF. So if you're using IAX as your trunking protocal 
> you need to use out-of-band DTMF on your IP phones (and adapters) as 
> well.

I just check Sipura-3000 setup on Line1 where my phone is connected to
and "DTMF Tx Method: Auto"

Auto includes: 
InBand
AVT
INFO
Auto
InBand+INFO
AVT+INFO

There is no Out-of-band setting.

-- 
#Joseph