Re: [Linphone-developers] comfort noise and opus

[Dragos Oancea]

Hi

Try Freeswitch 1.6.x - preferably 1.6.10 - lots of things changed since 1.5.x .

Freeswitch and Linphone work pretty good together when it comes to Opus .

Cheers,

Dragos

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From: Russell Treleaven <address@hidden>
To: address@hidden; address@hidden; FreeSWITCH Users Help <address@hidden>
Sent: Tuesday, September 20, 2016 9:42 PM
Subject: [Linphone-developers] comfort noise and opus

I noticed something that I thought I would share for the benefit of others.

FreeSWITCH Version 1.5.15b+git~20141215T224714Z~0b414a8de8~64bit (git 0b414a8 2014-12-15 22:47:14Z 64bit)

Linphone 3.9.1

To reproduce

place a call with linphone using opus to a freeswitch server voicemail extension.

listen to the outgoing message and leave a voicemail after the prompt.

observed

Fairly loud comfort noise is heard while leaving the message.

expected

should hear silence instead of comfort noise.

If we change the codec to pcmu we hear silence instead of comfort noise.

Comfort noise is heard because after the outgoing message freeswitch stops sending rtp.

workaround

add this to the voicemail extension before the answer application.

<action

application="set"

data=""

></action>

Sincerely,

Russell Treleaven

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