[Freeswitch-users] mod_esf with polycom

Fri Jan 29 22:41:29 MSK 2016

I just did a packet capture of a mod_esf call.  What I'm seeing is not a
lot compared to a polycom page capture.  In the mod_esf cap, I just  a
handful of packets of protocol IGMPv3.  Regardless of my config:

<action application="esf_page_group" data="224.0.1.116 5001"/>

They are being sent to the wrong destination address 224.0.0.22. And
curiously, I see my destination address being used as the group.  (see
attachment)

I don't see this 224.0.0.22 address in the source for mod_esf at all....I
wonder where that's coming from?

In the polycom capture, there are no such IGMP packets, just UDP.
Although I do realize that it's supposed to do a few different broadcast
types from different manufacturers all at once.

Peter Hartmann
Hartmann Computer Consulting
http://blog.hartmanncomputer.com
(212)203-8870

If I can't explain it to you in plain language, that means I don't
understand it.

On Thu, Jan 28, 2016 at 12:30 AM, Bote Man <bote_radio at botecomm.com> wrote:

> Perhaps you are being led astray by the term “multicast group” in the
> usage prototype. That is simply the multicast address, such as 239.1.1.1
>
>
>
> FIXED!
>
>
>
> IGMP = Internet Group Management Protocol which is where that came from.
>
>
>
> I have used mod_esf to send multicast streams to devices manufactured by
> one of my clients and it worked swimmingly with only the multicast address
> and port being the fields that mattered. Thanks to a change by anthm you
> can even add it to the conference bridge if you want both regular SIP calls
> and pages to be combined into one group announcement.
>
>
>
> With a phone there’s no telling what else they might require to light it
> up for a multicast announcement. Somebody was just asking a very similar
> question here last week for a different phone. If the phone requires some
> control signal or command to open up the speaker for a multicast
> announcement to follow, then I don’t think FS does that right now. It might
> be worth scouring Polycom documentation to see if they reveal any secrets.
>
>
>
> * * *
>
> I really wish the order of the arguments were
>
> Address, port, TTL, [other stuff]
>
> So that “other stuff” could’ve been made optional. I have never gotten a
> clear definition of what that Linksys control port does, but my research
> revealed that it was likely carried over from an Asterisk compatibility
> feature.
>
>
>
>
>
> ---
>
> Bote
>
>
>
> FreeSWITCH Docs Janitor
>
> http://freeswitch.org/confluence
>
>
>
>
>
>
>
>
>
> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Peter
> Hartmann
> *Sent:* Wednesday, 27 January, 2016 22:27
> *To:* FreeSWITCH Users Help
> *Subject:* Re: [Freeswitch-users] mod_esf with polycom
>
>
>
> Thanks Brian.  Yes, I've tried it.  It looks promising though, since I can
> see some of  the default polycom settings defined in variables.  Nothing
> about group is mentioned...so maybe it's going to the default group?  I
> have a feeling I'll be doing a packet capture on a group-25 (emergency)
> broadcast to see what it does.
>
>
>
>
>
> Peter Hartmann
> Hartmann Computer Consulting
> http://blog.hartmanncomputer.com
> (212)203-8870
>
> If I can't explain it to you in plain language, that means I don't
> understand it.
>
>
>
> On Wed, Jan 27, 2016 at 10:03 PM, Brian West <brian at freeswitch.org> wrote:
>
> I'll review the source in the morning and verify if it's documented
> correctly.
>
>
>
> On Wednesday, January 27, 2016, Brian West <brian at freeswitch.org> wrote:
>
> Have you tried it?  It should just work if I recall correctly.
>
> On Wednesday, January 27, 2016, Peter Hartmann <peter at hartmanncomputer.com>
> wrote:
>
> Hey, how do you use mod_esf with Polycom?  The source suggests that
> it's supported, but the arguments in the documentation seem specific
> to Linksys.  From using the feature directly from a handset, I imagine
> we have to pass multicast-address, multicast-port and group-number.
> I've tried every combination and permutation with no luck.
>
> The reason I'm doing this is because if the emergency group number is
> used, the announcements will be at full volume regardless of the
> hands-free volume setting.
>
> And also I'm looking to do this in FS because I'm bridging in another
> PA system also.
>
>
> Thanks,
>
>
> Peter Hartmann
> Hartmann Computer Consulting
> http://blog.hartmanncomputer.com
> (212)203-8870
>
> If I can't explain it to you in plain language, that means I don't
> understand it.
>
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>
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>
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>
>
>
> --
>
> *Brian West*
> brian at freeswitch.org
>
> *Twitter: @FreeSWITCH , @briankwest*
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> http://www.freeswitchcookbook.com
>
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>
> *T:*+19184209001 | *F:*+19184209002 | *M:*+1918424WEST (9378)
> *iNUM:*+883 5100 1420 9001 | *ISN:*410*543 | *Skype:*briankwest
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>
>
> _________________________________________________________________________
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>
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>
> _________________________________________________________________________
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>
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