asterisk users - Feb 2017 - How to read or relay SIP PUBLISH messages ?

Hello,

I'm currently testing a so-called VQ RTCP-XR feature from a a SIP hardphone.

When a phone has enabled this feature, it would send a SIP PUBLISH to its
SIP Server letting this server dispatch to whatever is needs to.

These messages are sent during calls but may also be sent when a call is
over.

At the moment, I'm using Asterisk to serve these SIP phones so my Asterisk
box receives those SIP PUBLISH and discard them with a 489 Bad Event reply.

I'm not using or planning to use any Kamalio server.

1. Is there an Asterisk version that would allow me to read (and store) in
or out-of-band SIP PUBLISH messages from SIP phones ?
2. Alternatively, is there an Asterisk version that would allow me to relay
those messages somewhere ?
3. Would a Kamalio-like box allow me to do this ?
4. Suggestions ?

Best
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On Thu, Feb 16, 2017, at 09:11 AM, Olivier wrote:
> Hello,
> 
> I'm currently testing a so-called VQ RTCP-XR feature from a a SIP
> hardphone.
> 
> When a phone has enabled this feature, it would send a SIP PUBLISH to its
> SIP Server letting this server dispatch to whatever is needs to.
> 
> These messages are sent during calls but may also be sent when a call is
> over.
> 
> At the moment, I'm using Asterisk to serve these SIP phones so my
> Asterisk
> box receives those SIP PUBLISH and discard them with a 489 Bad Event
> reply.
> 
> I'm not using or planning to use any Kamalio server.
> 
> 1. Is there an Asterisk version that would allow me to read (and store)
> in
> or out-of-band SIP PUBLISH messages from SIP phones ?
> 2. Alternatively, is there an Asterisk version that would allow me to
> relay
> those messages somewhere ?
No version of Asterisk allows the handling or relaying of these
arbitrary PUBLISH messages. In the case of PJSIP though that is
pluggable so a C module could be written to do something.
> 3. Would a Kamalio-like box allow me to do this ?
You could act as you wish on the PUBLISH requests in Kamailio.

-- 
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

2017-02-16 14:27 GMT+01:00 Joshua Colp <jcolp at digium.com>:
> On Thu, Feb 16, 2017, at 09:11 AM, Olivier wrote:
> > Hello,
> >
> > I'm currently testing a so-called VQ RTCP-XR feature from a a SIP
> > hardphone.
> >
> > When a phone has enabled this feature, it would send a SIP PUBLISH to
its
> > SIP Server letting this server dispatch to whatever is needs to.
> >
> > These messages are sent during calls but may also be sent when a call
is
> > over.
> >
> > At the moment, I'm using Asterisk to serve these SIP phones so my
> > Asterisk
> > box receives those SIP PUBLISH and discard them with a 489 Bad Event
> > reply.
> >
> > I'm not using or planning to use any Kamalio server.
> >
> > 1. Is there an Asterisk version that would allow me to read (and
store)
> > in
> > or out-of-band SIP PUBLISH messages from SIP phones ?
> > 2. Alternatively, is there an Asterisk version that would allow me to
> > relay
> > those messages somewhere ?
>
> No version of Asterisk allows the handling or relaying of these
> arbitrary PUBLISH messages. In the case of PJSIP though that is
> pluggable so a C module could be written to do something.
>
>From RFC 6035, "This document defines a new SIP event package,
vq-rtcpxr,
and
a new MIME type, application/vq-rtcpxr, that enable the collection and
reporting of metrics".

As I'm not aware of many SIP event package currently implemented in
PJSIP/Asterisk acting for
out-of-calls events, it shouldn't be easy to mimic current features to add
this new one.


> > 3. Would a Kamalio-like box allow me to do this ?
>
> You could act as you wish on the PUBLISH requests in Kamailio.
>
This seams easier, for the moment.

I think I still need to better understand what are mixed Asterisk-Kamailio
architectures main strengths
compared to alternatives (Asterisk alone, Kamailio/RTPproxy, ...) but that
is another story.

Thank you very much for replying.


>
> --
> Joshua Colp
> Digium, Inc. | Senior Software Developer
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - US
> Check us out at: www.digium.com & www.asterisk.org
>
> --
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