[Freeswitch-users] Nuance Speech Server / Vocalizer MRCPv2mod_unimrcp simultaneous licenses not releasing quickly enough.

Wed Feb 27 02:47:38 MSK 2013

I used MRCPv1 with remote servers.  3 MRCP servers handling requests from
12 FS servers.

Start with the example nuance MRCPv1 configuration in conf/mrcp_profiles
and replace the rtp-ip, server-ip, and server-port.  Use IP address, not
hostnames, not "auto".  If that doesn't work, reply with your configuration.

Chris

On Tue, Feb 26, 2013 at 2:33 PM, Jason Moran <jmoran at secureachsystems.com>wrote:

>  After trying MRCPv1 – I don’t think anybody out there is using Nuance
> for TTS remotely / externally!  The audio is always blank / silence(both
> Nuance and FreeSWITCH seem to think it is working ok). I can get it to work
> with Nuance on localhost/127.0.0.1, but I believe there is a problem with
> FreeSWITCH/UniMRCP determining the correct rtp-ip when in MRCPv1 mode when
> using a server other than localhost. As shown in earlier posts in this
> thread, I can get it to work with MRCPv2 on the same external server.****
>
> ** **
>
> Regardless of all of these settings (client-ext-ip , client-ip , rtp-ip ,
> rtp-ext-ip being set to an IP address other than 127.0.0.1, RTP is still
> trying to use 127.0.0.1, although RTSP is using the external IP address
> provided.****
>
> ** **
>
> mpf_rtp_stream.c from uniMRCP returns several references to 127.0.0.1
> although it should not:
> mpf_rtp_stream.c:495 () Close RTP Receiver 127.0.0.1:4018 <-
> 10.0.0.67:7914 [r:0 l:0 j:0 d:0 i:0]****
>
> and****
>
> mpf_rtp_stream.c:1294 () Send Compound RTCP Packet [BYE] [76 bytes]
> 127.0.0.1:4019 -> 10.0.0.67:7915****
>
> mpf_rtp_stream.c:1306 () Failed to Send Compound RTCP Packet [BYE] [0
> bytes] 127.0.0.1:4019 -> 10.0.0.67:7915****
>
> ** **
>
> I believe this explains why I cannot hear the audio that is generated, as
> it should be using a 10.0.0.x IP address to receive and sent over RTP.  To
> be safe I also changed the external_rtp_ip in vars.xml, but that hasn’t
> fixed the issue either.****
>
> ** **
>
> Does anybody know where mpf_rtp_stream.c is getting this RTP IP Address
> from? Why does it insist on 127.0.0.1 despite all settings saying otherwise?
> ****
>
> ** **
>
> Jason****
>
> ** **
>
> *From:* Christopher Rienzo [mailto:cmrienzo at gmail.com]
> *Sent:* Monday, February 25, 2013 8:34 PM
> *To:* FreeSWITCH Users Help
> *Subject:* Re: [Freeswitch-users] Nuance Speech Server / Vocalizer
> MRCPv2mod_unimrcp simultaneous licenses not releasing quickly enough.****
>
> ** **
>
> You can also try MRCPv1 (RTSP) and see if there is better performance.
>  Using SIP to set up an MRCP session is silly.****
>
> ** **
>
> Chris****
>
> ** **
>
> On Mon, Feb 25, 2013 at 6:42 PM, Michael Collins <msc at freeswitch.org>
> wrote:****
>
> Another case of DRM hurting only those who've paid for it... *sigh*
>
> I recommend calling your VAR or Nuance and gently but firmly insisting on
> a resolution.
>
> -MC****
>
> ** **
>
> On Mon, Feb 25, 2013 at 2:21 PM, <cmrienzo at gmail.com> wrote:****
>
> We also had an issue with nuance eating licenses.  We had enough room to
> tolerate this but did have to occasionally reboot servers when too many
> were consumed.  ****
>
> ** **
>
> Chris****
>
> ** **
>
> ** **
>
> ** **
>
>
> On Feb 25, 2013, at 3:21 PM, Rob Hutton <justlikeef at gmail.com> wrote:****
>
>  We have a similar situation on a Cisco UCCX platform that we ended up
> having to write a script to bounce the services every couple of hours to
> clear.  We haven't seen a fix from Nuance yet.****
>
> On Mon, Feb 25, 2013 at 2:32 PM, Jason Moran <jmoran at secureachsystems.com>
> wrote:****
>
> In connecting to Nuance Speech Server’s MRCPv2 for text-to-speech (Nuance
> Vocalizer) using mod_unimrcp, a single phone call which has several
> different TTS phrases should only use up 1 single simultaneous license.
> However, I am seeing a call use up 2,3,4 (etc) like it is not releasing the
> connection/license.****
>
>  ****
>
> I looked this up and some forums have noted that Nuance “does things
> wrong” and uniMRCP needs to send Nuance the “RTCP BYE” to tell Nuance that
> it is done with the synthesizer speech.  But I tried that, and it still
> eats up the licenses. Within a couple of calls I’m out of TTS ports and the
> calls fail (but they clear again after several more seconds).****
>
>  ****
>
> <!-- enable/disable rtcp support -->****
>
> <param name="rtcp" value="1"/>****
>
> <!-- rtcp bye policies (rtcp must be enabled first)****
>
>      0 - disable rtcp bye****
>
>      1 - send rtcp bye at the end of session****
>
>      2 - send rtcp bye also at the end of each talkspurt (input)****
>
> -->****
>
> <param name="rtcp-bye" value="2"/>****
>
> <param name="rtcp-tx-interval" value="5000"/>****
>
>  ****
>
> Ideas? Experience?****
>
> -Jason****
>
>
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> --
> Michael S Collins
> Twitter: @mercutioviz
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