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9608 vs 9608G line noise

9608 vs 9608G line noise

9608 vs 9608G line noise

I have a ticket open with Avaya right now for loud background noise on newer 9608G phone sets (black label). The older phones with a white label don't seem to have the issue. The ticket has been going on now 2 months or so with more and more wiresharks requested all the time. Basically when not talking the user hears loud hiss in the background that changes in pitch. This is IP Office 10.1, 9608G phones on ATT SIP lines--various new firmware releases have been tried with the latest release being the loudest. I think the noise is there on 9608 white label phones a bit but far far in the background. The usual AGC stuff doesn't do anything.

Anyone noticed this behavior? Perhaps you have to be on ATT SIP to hear it?

We have only just begun deploying these phones with the black label...


RE: 9608 vs 9608G line noise

I have a mix of IP phones.
96xx, 56xx, and 16xx.
I have white and black label 9608G phones.
firmware on 9608 is 6.6401
SE R10.1
I 'm not have any issues with background noise.

RE: 9608 vs 9608G line noise

Thanks. What sort of lines are you using?

RE: 9608 vs 9608G line noise

SIP from level 3.
SIP from AT&T
Had PRI from AT&T

RE: 9608 vs 9608G line noise

Do you have the same issue on internal calls?

If not then it is probably not a handset issue

Do things on the cheap & it will cost you dear

RE: 9608 vs 9608G line noise

Internal seems to be ok sort of. The same thing could be going on because any noise like ventilation appears amplified. The issue as best I can tell is that one phone type is amplifying certain frequencies that are there in the call but are not noticeable on the older phone type. When I downgraded firmware it got a little better. So either I have to get rid of the ATT noise (or noise IPO is inserting) or fix the new phones...

RE: 9608 vs 9608G line noise

I have encountered a similar issue before and it turned out that it was our firewall that was causing the issue. We had application control enabled and this was causing poor call quality on some of our handsets. More noticable on our calls over our site to site VPN. Turning off H.232 and SIP logging in the application control resolved the issue

RE: 9608 vs 9608G line noise

Thanks we will have to check those things in the firewall. I did find that with extn and ATT SIP lines set to g711 there is no noise. Wish I could turn off g729 but need for fax renegotiate to t38....

RE: 9608 vs 9608G line noise

I didn't see it in your post, is it on an IP 500 and not server edition? IF 500 I think you have bad VCM resources. I have seen something similar before. you said G711 is fine and sounds like the issue I had.

RE: 9608 vs 9608G line noise

Are you using a (wireless) headset or only a handset?

I had some sort of the same issue with a 9504 and a Jabra headset.

9508 is fine.

RE: 9608 vs 9608G line noise

Thanks, could be bad vcm yes--strange the 9608 is not affected though (just the 9608G) but could be amplifying noise that shouldn't be there from the VCM I suppose. Using handset or speaker...

RE: 9608 vs 9608G line noise

Give it a try to use the latest phone firmware 6.6501 (or similar). It is included in the latest 10.0 and 10.1 service packs or can be downloaded separately.

We had an issue with 9608G only (not 9608) that the first few seconds of an outbound call had been silent.

RE: 9608 vs 9608G line noise

Thanks. I think that is the firmware we started with but it is hard to remember now--I'll have to look through my notes. I'll give that a try if we didn't already!

RE: 9608 vs 9608G line noise

This is for an ipo 500v2...

RE: 9608 vs 9608G line noise

Regarding the VCMs the issue is present at multiple sites with separate hardware (connnected SCN). So could still be VCM but less likely. I reproduced the issue on our test system too. Seems to be isolated to this batch of phones. I haven't had another batch of new phones to test since though.

RE: 9608 vs 9608G line noise

Avaya has now duplicated the issue. Basically the newer black label phones are amplifying background noise frequencies (when present) more than the older while label phones do. So depending on what noise is on the lines etc. this can be very distracting. They haven't said what will be done about it yet but at least after a couple months we are on the same page.

RE: 9608 vs 9608G line noise

Thanks for updating this; good to know!

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