[Freeswitch-users] audio quality issue

Sun Dec 19 21:50:47 MSK 2010

Hi Sam

Sorry for the late reply.

My issue is with only hearing the IVR originating from the switch. 

Phone call debug:

2010-12-19 18:47:16.057209 [DEBUG] sofia_glue.c:3585 Audio Codec Compare [PCMU:0:8000:20]/[G7221:115:32000:20]
2010-12-19 18:47:16.057209 [DEBUG] sofia_glue.c:3585 Audio Codec Compare [PCMU:0:8000:20]/[G7221:107:16000:20]
2010-12-19 18:47:16.057209 [DEBUG] sofia_glue.c:3585 Audio Codec Compare [PCMU:0:8000:20]/[G722:9:8000:20]
2010-12-19 18:47:16.057209 [DEBUG] sofia_glue.c:3585 Audio Codec Compare [PCMU:0:8000:20]/[PCMU:0:8000:20]
2010-12-19 18:47:16.057209 [DEBUG] sofia_glue.c:2354 Set Codec sofia/internal/1006 at 192.168.0.10 PCMU/8000 20 ms 160 samples
.
.
.
.
EXECUTE sofia/internal/1006 at 192.168.0.10 sleep(1000)
2010-12-19 18:28:22.618376 [DEBUG] sofia.c:4153 Channel sofia/internal/1006 at 192.168.0.10 entering state [ready][200]
2010-12-19 18:28:22.658376 [DEBUG] switch_rtp.c:2066 Correct ip/port confirmed.
EXECUTE sofia/internal/1006 at 192.168.0.10 voicemail(check default 192.168.0.10)
2010-12-19 18:28:23.618435 [DEBUG] switch_ivr_play_say.c:63 No language specified - Using [en]
2010-12-19 18:28:23.818446 [DEBUG] switch_ivr_play_say.c:63 No language specified - Using [en]
2010-12-19 18:28:23.818446 [DEBUG] switch_ivr_play_say.c:244 Handle play-file:[voicemail/vm-enter_id.wav] (en:en)
2010-12-19 18:28:23.818446 [DEBUG] switch_ivr_play_say.c:1152 Codec Activated L16 at 8000hz 1 channels 20ms
2010-12-19 18:28:25.778567 [DEBUG] switch_ivr_play_say.c:1444 done playing file
2010-12-19 18:28:25.878572 [DEBUG] switch_ivr_play_say.c:244 Handle say:[#] (en:en)
2010-12-19 18:28:25.878572 [DEBUG] switch_ivr_play_say.c:1152 Codec Activated L16 at 8000hz 1 channels 20ms
2010-12-19 18:28:26.298600 [DEBUG] switch_ivr_play_say.c:1444 done playing file

The phone when playing 'vm-enter_id.wav' seems to jump in volume (initially low volume then high).  It also makes a high pitch creaking type noise after 'say:[#] '.

Also when it asks me to leave a message after the tone, it immediatley says 'my message was too short' without allowing me to record anything.  Could the phone be sending an echo which causes freeeswitch to think i have ended my recording?

I was wondering if i should invest in some new phones?  Any recommendations?

Cheers

Raf

Date: Sun, 19 Dec 2010 13:10:41 +0530
From: u2nsam at gmail.com
To: freeswitch-users at lists.freeswitch.org
Subject: Re: [Freeswitch-users] audio quality issue

Hi ,

Do you have issues only with hearing the IVR originating from the switch ? 
Phone to phone works fine when RTP pass through is enabled ? which codec gets negotiated when IVR plays and what are the IVR file properties which is negotiated?

Your voice mail gets recorded properly means the RTP is passing well to the switch ...

Regads
Sam

On Sat, Dec 18, 2010 at 2:52 AM, Rafqat . <rafonline at hotmail.com> wrote:

btw.  I have no audio issues when making calls between phones through freeswitch (voice quality is very good).

From: rafonline at hotmail.com

To: freeswitch-users at lists.freeswitch.org
Date: Fri, 17 Dec 2010 21:19:11 +0000
Subject: [Freeswitch-users] audio quality issue

Hi, 

I recently installed freeswitch 1.0.6 on centos 5.5 (hosted on xen server).  I feel as if the audio quality is not as good as what it should be (6-7 out of 10).  This is apparent in calling the default voicemail IVR, sometimes I have issues leaving a message, sometimes I hear some weird noises.  However, I have no issues with the quality of the recorded voicemail message I leave, it sounds fine on playback.

Is this an issue with my phones (Flexor 500)?  I have a softphone which doesn't seem as bad but still has issues.

I also get the following message on startup of freeswitch:

2010-12-17 21:17:39.138958 [WARNING] switch_time.c:206 Timer resolution of 4000 microseconds detected!

Do you have your kernel timer frequency set to lower than 1,000Hz? You may experience audio problems.

I assume its related. 

Any help will be much appreciated.

Cheers

Raf

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