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Comfort Noise Setting on SIP Signal Group

Comfort Noise Setting on SIP Signal Group

Comfort Noise Setting on SIP Signal Group


If I change the setting RFC 3389 Comfort Noise from "n" to "y" on our SIP signal groups during the production day.. will this create impact to users?
We're having issues with folks complaining of speaker phone calls "cutting out" or one-way audio and we'll turn this on to attempt to keep the RTP stream alive during these calls.


RE: Comfort Noise Setting on SIP Signal Group

What kind of phones? I think by design the phones cut the speaker if the mic is picking up noise to avoid feedback because they don't have the appropriate feedback detection/prevention stuff in them.

I don't think the sig group setting would change much. Wireshark a phone while it's happening and capture both ends of the stream and I'd bet you're getting comfort noise from the other party when your speakerphone is picking up more background noise from the environment on the mic and cutting out the speaker.

RE: Comfort Noise Setting on SIP Signal Group

Avaya 189B

RE: Comfort Noise Setting on SIP Signal Group

It could be the environment, too.. or yes, the far-end. I just know I've been asked to attempt this setting change. I just don't want to hork prod if I change this setting at 8am instead of during the maint window.

RE: Comfort Noise Setting on SIP Signal Group

Your change to the signaling group will not become active until you busy out and then release the trunks so YES your change will impact the users on active calls.

RE: Comfort Noise Setting on SIP Signal Group

Isn't that B189 h323? is it full duplex speaker on the station form?

RE: Comfort Noise Setting on SIP Signal Group

thanks for your posts!! and Kyle, I didn't see those settings on the station form.. but I appreciate your input :)

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