"Nominal (less than 10%), Moderate (11-30%), or more?" I think it's far less than even that 10%. -Steve On 9 March 2011 17:13, Max Clark <max.clark@gmail.com> wrote:
Advantages of Proxy Media:
1) Support codecs not natively supported by FreeSWITCH 2) Lower CPU resources on FreeSWITCH
So for 1) I'm really only concerned with t38/fax over g711. With our current configuration faxing (although unsupported) is working just fine. What should I expect if I revert to media mode?
2) If I disable transcoding, what kind of difference in resource utilization should I expect? Nominal (less than 10%), Moderate (11-30%), or more?
Thanks, Max
On Wed, Mar 9, 2011 at 9:02 AM, Kristian Kielhofner <kris@kriskinc.com> wrote:
If your intention is to *strictly* hide topology proxy media will rewrite the IP address in the SDP but that's about it. Technically that counts as "topology hiding". Other SDP parameters, however, will pass through and leak various bits of information about the endpoints behind the SBC:
- Codec support - Payload types - Other "random" various SDP parameters
Most real SBCs will rewrite the entire SDP (as FS does by default).
Another thing to consider - the vast majority of FS users do not use proxy media (and most that do use it incorrectly). This leaves you open to the possibility that you'll experience strange edge case bugs using a media mode different from the majority of the rest of the FS user base.
On Wed, Mar 9, 2011 at 10:52 AM, Max Clark <max.clark@gmail.com> wrote:
Hello,
I have a couple of FreeSWITCH boxes functioning as SBCs on our network. We need them to:
- Route Calls - Function as B2BUAs for call logging - Hide topology from the endpoints
They do not need to:
- Intercept/play audio - Manipulate the SDP - Transcode - Process anything other than SIP
So these machines have been running with Proxy Media enabled in the dialplan. Is the the proper/recommended way of configuring for our environment/needs? Is the minimal gain of resources by not processing the RTP worth it?
Thanks, Max
-- Kristian Kielhofner
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