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Brother Gabriel
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Calls dropping
14. Jan 2015 at 18:22
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We just installed FreePBX with Asterisk 11.  When I use PhonerLite (on Windows 7 x64 Pro) it keeps dropping the call intermittently.  I think it may be some sort of silence detection - if the recipient mutes me, it drops after 30 seconds EVERY TIME.  Otherwise, it will drop in the middle of a call for no reason at an arbitrary time.  This only happens with PhonerLite, and not with other softphones on my network.

Is there a PhonreLite setting somewhere I can adjust? Or do I need to make some setting in Asterisk?
  
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Re: Calls dropping
Reply #1 - 15. Jan 2015 at 08:20
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PhonerLite drops a call if many errors occur for sending RTP. If the remote party answers with an ICMP (e.g. port unreachable), then the call is dropped.
Can you do a Wireshark trace for such call and send it to me by e-mail? Then I can tell you more.
  
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Brother Gabriel
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Re: Calls dropping
Reply #2 - 16. Jan 2015 at 05:09
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Ah, in FreePBX (asterisk), I have some RTP settings:
Reinvite Behaviour (yes|no|nonat|update) = no
RTP Timers:  rtptimeout=30 [sic], rtpholdtimeout=300; rtpkeepalive=0

[update]
I se the rtpkeepalive to 10 and now the calls don't drop any more, even if the callee has me on mute.

Now I just have to eliminate the crackling.
« Last Edit: 16. Jan 2015 at 21:57 by Brother Gabriel »  
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Re: Calls dropping
Reply #3 - 17. Jan 2015 at 16:46
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Thanks for the update. Do you still have problems with audio quality? You may change the sample rate in PhonerLite.
  
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Brother Gabriel
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Re: Calls dropping
Reply #4 - 17. Jan 2015 at 17:01
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Mr. Sommerfeldt,

Yes, the sampling was the next thing I was going to try.
I had it set to 48000.

I'm going to try 16000
and disable all codecs except ulaw, alaw and dtmf
and see if that helps.

I did both of those things and now the calls are crystal clear.  I am very happy now!   Smiley
  
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Re: Calls dropping
Reply #5 - 19. Jan 2015 at 08:20
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Thanks for that update.
  
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