Severe Echo on incoming calls
lk96:
I have been trying to think of situations where echo may happen only on incoming calls.
Is it possible by any chance, that more than one
devices answer an incoming call ?
for example, this could happen if you forward the call to multiple devices
(your home handset, may be a cell phone), etc. So if lets say you answer the call
on your home phone, but you had configured some other device (ie your cell phone) to
auto answer at the same time, then what you hear would sound as echo.
Does the remote party also hear the echo? or just you? (you did mention in the OP that
the remote party can barely hear you but wan't clear if they hear distorted sound or just
very low volume).
L.
CoalMinerRetired:
> Is it possible by any chance, that more than one devices answer an incoming call ?
The easy way to test this would be to disable forwarding to all but the Obi device (Google Chat in GV Settings), then observe if the echo is still present. Sounds a test to add to the list.
I hope PCL checks back in and gives us an update.
ScottyD_42:
I don't think that it's due to multiple devices answering (I'm only forwarding to the phone port). I've checked and I don't see the same problem on an incoming call from a VoIP port (SP1). It only seems to happen on the PSTN and the echo is only heard on the local side. Looking further through the forums, I have the identical symptoms to the person in this thread:
http://www.obitalk.com/forum/index.php?topic=1035.0
If you dial manually (press # first) out the PSTN port, there is an echo for the first one or two digits. If I let the Obi process the number first and then forward it out the PSTN, I don't hear the outgoing dialing, so it's possible that it's doing it there as well, but I can't hear it.
I'm no expert on the internals of the PSTN bridging, but it looks to me like the echo cancellation isn't kicking in immediately on the PSTN port. After a second or two, it seems to adapt and things sound good. I don't know if that the nature of the echo cancellation requires some time for the feedback loop to work or whether it can work right from the start.
Lavarock7:
I do not know if certain devices act differently on inbound vrs outbound calls, but hearing your own voice too loud may be related to "sidetone".
From Wikipedia "Sidetone":
In telephony, sidetone is the effect of sound picked up by the telephone's transmitter (mouthpiece) and instantly introduced at a low electronic signal level into the receiver (earpiece) of the same handset, a form of feedback.
So if someone tells me their own voice is too strong in their ear (an echo), I would try talking in a lower voice and see if that helps. Again, why this would be happening only on outbound calls could be the way the phone or other device handles the levels of the audio in transmission based upon who talks first (perhaps). Only a guess.
In any event, can you try adjusting the phone volume in the Obi? Perhaps the Port channel gains would help. It is worth a try.
Perhaps someone else with more info about Phone volumes can "chime" in (sorry for the pun)
PCLarry:
Sorry about the delay in getting back to you folks.
Been out of town for a bit.
It occurred to me after trying the suggestions posted here (a special thanks to all who participated), and having no positive improvement, that I may have unintentionally left out an important bit of information.
Our primary use of this device, is to reduce long distance telephone charges on our land-line.
Therefore, we not only have it connected to a telephone, but to the land-line as well.
NOTE: we DO NOT use GoogleVoice for messaging.
The echo/feedback DOES NOT OCCUR when the GoogleVoice number is dialed by the caller.
In fact, the call quality is good.
***The problem happens when the land-line is dialed by the caller, and then picked up at the phone connected to the OBi110.
So, to clarify:
1. All OUTGOING calls from any phone - Quality GOOD
2. INCOMING calls received by 'Land-line only' phone(not connected to the OBi110) - Quality GOOD
3. INCOMING calls received by the OBi110 when the GoogleVoice number is dialed - Quality GOOD
4. INCOMING calls received by the OBi110 when the Land-line number is dialed - Quality VERY BAD (severe echo/feedback)
5. Final symptom - The land-line phone will ring about 5 sec. BEFORE the OBi110 phone rings (when the INCOMING call is to the land-line number).
6. I deleted the device from the OBi 'dashboard', did a 'factory reset' of the OBi110, and re-created/reconnected it to the 'dashboard'.
Lastly, there is no problem with the land-line itself, or any of the phones used (had the phone company over to test everything, to assist with diagnosis)
There, you have it.
Hope this information helps some of you OBi-Wizards out in OBi-Land to understand this perplexing issue.
Peace All
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