Thanx for everyone's passionate responses, and apologises for not
replying sooner.
1. Based on what I have seen I take it noone is sure of what the true
purpose and the effects of the relaxdtmf parameter offer.
2. I am using both a mixture of VSP's and SPA3K's, but primarily it
is the VSP's
3. And as for tweaking the output level's, I see no options being
provided within the IAX and SIP configuration files, and not really
concerned with the SPA3K's at this time since they are fail-overs.
4. Since the bulk of my issues are through the IAX2/SIP methods for
DMTF and Asterisk has direct issues with DTMF, I just hope that v1.4
will be released sooner rather than later.
On 09/06/2006, at 5:11 AM, Martin Joseph wrote:
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
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