IP Phone Quality 2

[chrismac52]

IPO 406v2
8 digital phones
2 ip phones
3 analog lines
4 channel VCM

The call quality is great internal, but when an outside call (analog) comes in, the quality is not so good. Has a lot of feedback and modulation. Appears to be a problem between the analog to ip conversion?

Any ideas?

 

[webin]

The work-around we've (at least me) been using in our office is putting the caller on hold then picking them back up, as KHolladay suggested on June 28th. It only takes a second and the caller never knows, but it does reduce the echo to almost nothing. Switching from a headset to speaker phone may trigger the same changes, but we don't have any around here I could test with.

I'm also planning on getting up to 3.2 as soon as I can, but unfortunately have a lot of "real" work that must come first. Let me know if you find anything special SuperJenks.

 

[mforrence]

I had the same issue at a site - small 406V2. After countless hours of troubleshooting, and parts swapping, we finally fixed it by swapping the processor to Partner ACS R7 and all telephones to Partner 18D and taking a huge financial hit. And they're happy as can be...
Mike

 

[chrismac52]

It sounds like Avaya needs to find a solution for us. When I changed the gain on the extension to a -10, it fixed it or improved it heavily. They have been very pleased since I did that.

 

[webin]

Still echos after the upgrade to 3.2... if anything a little more loudly.

As this point I sort of feel that the sound volume is loud enough (it wasn't before) that I could decrease the gain a bit to make the echo less noticable (but that obviously makes everything a little quieter)

 

[tlpeter]

it must be the analog trunkline so why not make it the problem of the provider ?

 

[latitude12]

To all of you experiencing this problem with IP phones - are you using VM Pro call recording?

 

[bbmk]

do not see why you should make it the provider's problem, assuming they have already proved their lines, analogue or digital, before it gets to the stage of swapping out the Voip equipment. Unfortunately, with all new advances in telecoms, the basics, like echoing and transmission quality, seem to be the least tested facets of the new equipment.

 

[webin]

No latitude12, we don't use call recording.

And I agree with bbmk... when we had version 48 or so firmware installed when I first started working here, the first couple seconds of a call had echo, but then it disappeared. After ungrading to 65, all calls from outside lines to IP phones had continuous echo. The analog trunks from the provider haven't changed at all. The IP Office hardware hasn't changed at all. The only thing that changed was Avaya's software.

And no, please don't suggest "downgrading" to old versions, because its not an option. I don't run Windows 3.1 or 95 or Me because they needed improvements. Older IP Office firmware had bugs too, many of which got fixed, just not the bug we are currently dealing with.

 

[latitude12]

Ok, thought it might match CQ26075, but I guess not. There isn't much info on the caveats database, but it does occur on analogue lines.

The IP phone firmware that goes with 3.1.65 does have more sidetone than the previous build, I have tested in the lab and found to be minimal, but some customers have complained of loud echo on this firmware. Avaya's solution (so far) is to downgrade the handsets (not the switch). Wouldn't fit in with the hold/unhold fix though.

 

[voippbx]

I honestly don't think Avaya knows how to fix this issue. I can tell you that for 1 year a customer of ours had these issues. Tier 3 came out 3 times with no fixes blaming everything on the network. The network installed a data capturing piece of hardware to point back to us.

 

[SuperJenks]

Who was the Tech that came out. We are going through that right now. We have tier 3 with us for a week to look at all these problems.