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[leon at scarlet-intern...]

Hi all,

I'm still undecided yet whether I need proxy-media or not. As I
understand it, the only downside of enabling proxy-media is that early-
media is not possible, correct ? (Or are there other reasons why I
shouldn't use proxy-media ?)

When I disable proxy-media I get little hickups in the audio on the
outbound leg of the call, which are not there when proxy-media is
enabled.

I made pcap dumps on the ethernet interface for both in- and outbound
legs, for both settings (proxy-media dis- and enabled), analyzed it in
wireshark (no packetloss), but when extracting the audiostreams to .au
and listening to it on my laptop, I hear the same hickups.

Is there some other setting that may fix the problem of the hickups ?
(Is this a known problem?)

I'm running fs with -hp argument, am doing no transcoding and am using
ALAW codec.

Is it helpful if I put the pcap and .au files somewhere ?

thanks & regards,

Leon

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[brian at freeswitch.org]

You shouldn't use it. It has a special use case and I suspect yours
isn't it. Are you doing anything with T.38 right now?

/b

On Mar 19, 2009, at 6:57 AM, Leon de Rooij wrote:

[leon at scarlet-intern...]

I'm not using T38 yet, it may be nice in the future, as long faxes
over alaw just don't work properly..

And also, there are these hickups now, that I don't have with proxy-
media enabled..

On Mar 19, 2009, at 2:15 PM, Brian West wrote:

[leon at scarlet-intern...]

Brian,

I put two au files here:

http://www.ldr.scarlet.nl/ua-to-fs.au
http://www.ldr.scarlet.nl/fs-to-mgw.au

It's a call from a Siemens SX762 (using ALAW) to FS (no transcoding)
which bridges it to a mediagateway.
Proxy-media is disabled on the incoming sip_profile.
Both au files are extracted from the same pcap file.

As you can hear, the second sample sounds bad.. Are there any flags I
can set in the incoming or outgoing sip_profile that may fix this ?

The server has zero load (it's a Dell R300 with 2.6.24-23-server 64
bit kernel). In fact, this was the only call going through..

FS is version 12163M

thanks,

Leon




On Mar 19, 2009, at 2:15 PM, Brian West wrote:

[brian at freeswitch.org]

I would have to have the raw pcap to make any sense out of it.

/b

On Mar 19, 2009, at 10:34 AM, Leon de Rooij wrote: