[Freeswitch-users] Phrase macros in conferences

Kris kris at livecall.com
Tue Jun 28 13:49:19 MSD 2011 

The conference controls/profiles cant be changed after the conference 
starts. Do You know C? We all have to do some C when Freeswitch can't do 
what we want.A feature would have to be added to mod_conference to play 
files unpon joining the conference. It would have to be something like this:
<action application="conference" 
data="${forum_ext}-${domain_name}@${conference_controls},PlayOnEntry=${name_var}&conf-enter.wav,PlayOnExit=???"/>

To really do the fancier stuff, you have to capture the CUSTOM event. Just 
do it with 2 API calls. Both are scheduled to play one after the other.
Api.Execute("conference", ConferenceName + " play " + "name.wav"); 
//+MemberID);

Api.Execute("conference", ConferenceName + " play " + "conf-enter.wav"); 
//+MemberID);

----- Original Message ----- 
From: "Bryan Smart" <bryansmart at bryansmart.com>
To: "FreeSWITCH Users Help" <freeswitch-users at lists.freeswitch.org>
Sent: Monday, June 27, 2011 1:03 PM
Subject: Re: [Freeswitch-users] Phrase macros in conferences


Yes, but not sure how I'd do that. In the conference profile, I can play a 
single sound file for an enter/leave. I can't join two files with "!" to 
have them play in series, like "name.wav!conference/conf-enter.wav".

Bryan

On Jun 27, 2011, at 3:37 PM, Brad Mina wrote:

You could have users prompted to record their name to get around the first 
issue and play it back before "... Has joined the conference" is played 
back.

Sent from my iPhone

On Jun 27, 2011, at 12:05 PM, Bryan Smart 
<bryansmart at bryansmart.com<mailto:bryansmart at bryansmart.com>> wrote:

Thanks, Michael. At least I know that it is a limitation, and not me 
overlooking something. :) I have 3 or 4 years on Asterisk, but only months 
on Freeswitch, so I'm always concerned that I haven't dug enough before 
posting requests.

For phrases inside conferences, I imagine 3 cases.

First are dynamic announcements, such as those that announce when someone 
joins or leaves a conference. It is helpful if the joining or leaving party 
can be identified. I imagined combining TTS for the name, along with a 
pre-recorded fragment like conference/conf-has_joined.wav. The result would 
be like "John has entered the conference." Right now, I must use entirely 
TTS for such announcements. I can't use "!" to concatenate files, and I 
can't defer to a phrase macro to string TTS and recordings together.

Second applies to localization. In a dynamic announcement, it might not be 
appropriate for the noun to be spoken first in languages other than English. 
Right now, the conference's prompt language must be customized by creating a 
different conference profile that specifies the correct sound base for the 
language. That could mean that the number of profiles in use has to be 
multiplied by the number of languages that should be supported. I know that 
the profile can omit the sound base, and the sound base of the first person 
to join will be used, but, particularly in a situation that concatenates TTS 
and audio, that can be worse. If the first person to join automatically 
selects sound files for a language, but the concatenation order is different 
for that language, then any rules in that profile that concatenate TTS and 
recordings to render announcements could result in strange outcomes. As far 
as I've been able to discover, the phrase system is the appropriate 
Freeswitch way to localize announcements, so it would probably be best for 
Conference to work that way also, rather than depending on per-case 
localization being handled with multiple profiles. If phrases were 
supported, then a single conference profile could play both static and 
dynamic prompts, and could automatically adjust to any language where phrase 
macros are present on the system.

Last are cases when multiple types of notification are desired. For example, 
notifications might use a combination of cues and speech. An audio cue 
serves a similar function to a visual icon: attracts attention and conveys 
general meaning. In a situation like a conference, there might be soft audio 
cues for joining, leaving, when a new person has the floor, etc. When one of 
those events takes place, the cue plays first to attract attention and set 
the listener's expectations regarding the type of spoken information that 
will follow. Next, an announcement is heard with details about the event. 
"<cue> John has left  the conference."






On Jun 27, 2011, at 11:25 AM, Michael Collins wrote:

Phrase macros are not supported inside mod_conference. If you look inside 
mod_conference.c you will see that it has its own functions for injecting 
audio into the conference and it does not support phrase macros. You can 
open up a feature request on Jira. I honestly don't know how easy/difficult 
this would be, so you may consider offering a bounty to sweeten the deal.

Curious: what types of phrases are you trying to play into the conference?

-MC

On Sun, Jun 26, 2011 at 4:57 PM, Bryan Smart 
<<mailto:bryansmart at bryansmart.com>bryansmart at bryansmart.com<mailto:bryansmart at bryansmart.com>> 
wrote:
I'm attempting to use phrase macros in mod_conference, but I'm not having 
success. Perhaps they aren't supported?

I have a working phrase macro. In the dialplan, both

<action application="phrase" data="my_phrase"/>

and

<action application="playback" data="phrase:my_phrase"/>

Work just fine.

The wiki says that, in conference.conf.xml, entries like pin-sound accept, 
for their value, file paths, strings prefixed with "say" for TTS, and 
strings prefixed with "tone_stream". This looks almost the same as what can 
be passed to the playback application in the dialplan. When I try to prefix 
a string with "phrase", it doesn't work.

<param name="pin-sound" value="phrase:my_phrase"/>

The console tells me "unknown file format". The console still tells me this 
if I make up phrase names

<param name="pin-sound" value="phrase:not_a_real_phrase"/>

So it is complaining about the syntax or capability, rather than an 
unrecognized format of an actual file.

If mod_conference doesn't support phrase macros, is this a near-future 
feature? Phrases would seem to be necessary to ocalize announcements and 
play announcements that are stitched together from multiple files.

Bryan


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