[Asterisk-Users] What does RELAXDTMF do?

[Martin Joseph]

On Jun 8, 2006, at 3:13 AM, Peter J Dean wrote:

> I have an issue with DTMF. DTMF is being partly recognised by some 
> external IVR systems (banks, billing, etc), other IVR systems have 
> intermittent issues. Call our VSP directly and using their IVR system 
> without issue, and our internal IVR works just fine. Currently i have 
> all voip devices using RFC2833, which is what is recommended, and thus 
> the sip.conf file has dtmfmode=rfc2833 and relaxdtmf=yes.
>
> I have not seen any information that clearly defines the purpose of 
> the relaxdtmf parameter in the sip.conf file, and wondering of 
> flicking it from yes to no will have an impact, and if so what sort of 
> impact will it have?
>
Dunno about that, but usually the gain of the output is the most likely 
source for this kind of intermittent issue.  If you can tweak your 
output level a hair each way and retest, you might find you are ok.

Just a thought,
marty