9 Nov
2005
9 Nov
'05
2:38 p.m.
How does mediaproxy select the codec to be used when multiple are present?
Does it try to use the lowest bandwidth codec first?
Is there any way to manipulate this so if it finds 3-4 codecs
available, it will use the one specified?
- Daryl
9 Nov
9 Nov
2:40 p.m.
New subject: [Users] Re: [Serusers] MediaProxy Questions
Daryl Sanders wrote:
How does mediaproxy select the codec to be used when
multiple are present?
Does it try to use the lowest bandwidth codec first?
Is there any way to manipulate this so if it finds 3-4 codecs
available, it will use the one specified?
It does not select any codecs, it just forwards the rtp packets back and
forth.
Andy
2:40 p.m.
New subject: [Users] Re: MediaProxy Questions
Daryl,
MediaProxy relays only RTP/RTCP packets irrespective of the codes
negotiated by the end points. So your endpoints select the codec
based on SDP offer/answer model and not MediaProxy.
Adrian
On Nov 9, 2005, at 5:38 AM, Daryl Sanders wrote:
How does mediaproxy select the codec to be used when
multiple are
present?
Does it try to use the lowest bandwidth codec first?
Is there any way to manipulate this so if it finds 3-4 codecs
available, it will use the one specified?
- Daryl
3:11 p.m.
New subject: [Users] Re: MediaProxy Questions
Thanks for the info, and please forgive my ignorance on the subject...
Is there a standard that ATAs uses for codec selection?
Like everyone else, I want to make sure my ATAs (cisco, sipura,
linksys) use only lower bandwidth codecs. I can guarantee that my
ATA's and my PSTN gateways will all have g729 available, but I want to
make sure that mediaproxy force a different codec emulation for any
reason.
- Daryl
On 11/9/05, Adrian Georgescu <ag(a)ag-projects.com> wrote:
Daryl,
MediaProxy relays only RTP/RTCP packets irrespective of the codes
negotiated by the end points. So your endpoints select the codec
based on SDP offer/answer model and not MediaProxy.
Adrian
On Nov 9, 2005, at 5:38 AM, Daryl Sanders wrote:
How does mediaproxy select the codec to be used
when multiple are
present?
Does it try to use the lowest bandwidth codec first?
Is there any way to manipulate this so if it finds 3-4 codecs
available, it will use the one specified?
- Daryl
3:15 p.m.
New subject: [Users] Re: MediaProxy Questions
On Nov 9, 2005, at 6:11 AM, Daryl Sanders wrote:
Thanks for the info, and please forgive my ignorance
on the subject...
Is there a standard that ATAs uses for codec selection?
Yes SIP/SDP check the RFCs.
Like everyone else, I want to make sure my ATAs
(cisco, sipura,
linksys) use only lower bandwidth codecs. I can guarantee that my
ATA's and my PSTN gateways will all have g729 available, but I want to
make sure that mediaproxy force a different codec emulation for any
reason.
You cannot enforce any codec selection with MediaProxy, you can only
limit/order the codecs in the PSTN gateway or your user agents.
- Daryl
On 11/9/05, Adrian Georgescu <ag(a)ag-projects.com> wrote:
Daryl,
MediaProxy relays only RTP/RTCP packets irrespective of the codes
negotiated by the end points. So your endpoints select the codec
based on SDP offer/answer model and not MediaProxy.
Adrian
On Nov 9, 2005, at 5:38 AM, Daryl Sanders wrote:
How does mediaproxy select the codec to be used
when multiple are
present?
Does it try to use the lowest bandwidth codec first?
Is there any way to manipulate this so if it finds 3-4 codecs
available, it will use the one specified?
- Daryl
6961
days inactive
6961
days old
4 comments
3 participants
participants (3)
-
Adrian Georgescu -
Andreas Granig -
Daryl Sanders