[Asterisk-Dev] rfc2833 DTMFs sent with bad timestamps (patch)

[Frank van Dijk]

Brian West wrote:

> Ya i see this but when I did the last fix on the DTMF I used a lucent 
> TNT and a 7960 which didn't ever increment the timestamps from digit 
> to digit.  So either these aren't totally compliant or the RFC warp 
> them too! :P  


Hm... reading the RFC I get to impression that it wants to give a 
gateway converting from RTP to PSTN the ability to inject inband DTMF 
converted from RFC2833 packets at exactly the right location into the 
(analog or ISDN or..) voice stream. Exactly the right location being 
where the DTMF was detected at the point where it entered the IP 
network. That would require accurate timestamps, so that would be a 
compelling argument for using 'real' timestamps i.s.o constant or fake 
ones, IMHO.

> I posted on your bug on mantis too ;)
>
> /b
>
> On Feb 26, 2005, at 2:58 PM, Frank van Dijk wrote:
>
>> Frank van Dijk wrote:
>>
>>>
>>> Attached is a summary of an ethereal trace that shows the cisco 
>>> gateway I talk to does change the ts from event to event but not for 
>>> packets of the same event.
>>
>>
>> *sigh*
>
> <...>

-- 

mvrgr Frank