[asterisk-users] RTP keepalive doesn't work

[Ryan Tucker]

Thanks for the info, I guess I would expect asterisk to send 'silence' (in blank RTP form or something) if silence suppression is disabled. Just as I would expect any end point to send 'silence' if it was muted when silence suppression was disabled. It seems that RTP keepalives would serve this purpose, however this doesn't seem to be available either... Should I file a bug report re rtpkeepalive?

Sent from my iPhone

On 29/01/2011, at 12:55 AM, "Kevin P. Fleming" <kpfleming at digium.com> wrote:

> On 01/27/2011 10:52 PM, Ryan Tucker wrote:
>> So, I've done some more testing and got some more info.
>> 
>> I have one endpoint that does silence suppression and one that doesn't. When the silence suppressing endpoint stops sending RTP, asterisk stops sending RTP to the other endpoint. I have disabled directmedia and directrtpsetup and it made no difference. I have even forced one endpoint to use GSM and the other to use ULAW (forcing asterisk to re encode everything) and asterisk STILL stops sending RTP when the endpoint does...
> 
> Asterisk doesn't have anything to send. What do you expect it to send 
> when it's not receiving anything? I see that we have an rtpkeepalive 
> configuration option, but I don't see that any code actually causes 
> keepalive packets to be sent anywhere... it did when it was first added, 
> but somehow that code has been lost.
> 
> This certainly warrants some investigation to find out when it was 
> removed and why, because the configuration option should have been 
> removed if the keepalive support was removed on purpose.
> 
> -- 
> Kevin P. Fleming
> Digium, Inc. | Director of Software Technologies
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
> skype: kpfleming | jabber: kfleming at digium.com
> Check us out at www.digium.com & www.asterisk.org
> 
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