Re: video calls not connecting to more than 500Kbps through gnugk.

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Hello Jan! :)

No, the call gets connected at 10Mbps - that is the limit and is what when
I do printcurrentcallsverbose says.
But still, even half of it - each way, would be more than enough.

I have investigated some more … with some packet captures and wireshark.

The problem I have found - is that they connect using H.261 (not H.263 or
H.264).

So I guess for H.261 is ok to connect to 448p @ 375Kbps.

Now, I have recompiled ffmpeg, ptlib and h323plus - and in the end gnugk -
10 times.

Although I read on the internet lots of times that GnuGk doesn’t have to
be aware of H.263 and H.264 apparently it is.

Another tests:
When I take them out of gatekepeer mode - In a direct call between 2
endpoints they connect to 720p @ 4Mbps
When the equips are in gatekeeper mode - still a direct call between 2
endpoints they connect to 448p @ 375Kbps

I also read a lot of posts explaining why h323plus doesn’t come with h.263
and h.264 and stuff … they are modules, and not in the h323plus library.

Trying to keep this mail short - I think the problem appears in the lack
of h.263 and h.264 from h323plus.

Do you have any ideas what to test or debug?

Thank you!

On 11.06.2015, 12:40, "Jan Willamowius" <jan@xxxxxxxxxxxxxx> wrote:

>Hi George,
>
>when you limit the call (both directions) to 1000 kbps, its seems ok to
>me if each endpoint gets to send 500 kbps...
>
>Also, when settings the limits, beware of the units: Its in 100 bits
>per second (not in bps and not kbps).
>
>Regards,
>Jan
>
>-- 
>Jan Willamowius, Founder of the GNU Gatekeeper Project
>EMail  : jan@xxxxxxxxxxxxxx
>Website: http://www.gnugk.org
>Support: http://www.willamowius.com/gnugk-support.html
>
>Relaxed Communications GmbH
>Frahmredder 91
>22393 Hamburg
>Geschäftsführer: Jan Willamowius
>HRB 125261 (Amtsgericht Hamburg)
>USt-IdNr: DE286003584
>
>
>George BOROS wrote:
>> Hello everybody,
>> 
>> My setup on using gnugk is:
>> - about 20 Cisco TelePresence terminals ­ each registering as terminals
>>with
>> 1 e164 id to the gnugk;
>> - a cluster of Cisco TelePresence Content Server (that records video
>>content
>> and does live feeds) - registered as a gateway with 2 prefixes (one for
>>live
>> feed and one for recording streams).
>> 
>> The GK does not to proxy, no routed mode, no h245 routed mode, no
>> autorization, nothing.
>> A simple gatekeeper to keep them all in the same place.
>> 
>> I migrated from using the gatekeeper option from a Cisco MCU to GnuGK.
>> 
>> Ever since I do that, all calls do not connect to more than 500Kbps,
>>even if
>> when I initiate the call I set the speed of 4000Kbps to a call.
>> 
>> It is to be noted that the options in the gatekepeer.ini are:
>> TotalBandwidth=100000000
>> 
>> MinimumBandwidthPerCall=2048
>> 
>> MaximumBandwidthPerCall=10000
>> 
>> 
>> And also, when I do a printcurrentcallsverbose ­ the calls says its
>> connected to 10000 Š
>> Although the server says the terminal asks for 500Kbps speed.
>> 
>> Any ideas? :)
>> 
>> Thanks!
>> 
>> 
>
>
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