Is it my Obi or is it my internet causing problems?
Robert.Thompson:
Hello:
My reception is intermittently poor, i.e. there is a lot of annoying 'crackling'.
Is there a way to tell if the problem is with my Obi 110 or if it is the router and/or internet cable?
Thanks.
giqcass:
The call is digital for most of the traversal process. "crackling" is not typically a digital noise it's more something you would hear on an analog system. AFAIK the sound does not become analog until just before the Obi spits it out the telephone port on your end.
If you eliminate a sound problem caused by the person on the other end of the line the problem most likely lies in one of the following places.
The phone itself.The wiring between the phone and the Obi.The Obi phone port.
Let me suggest a few things that might help.
Try attaching a different phone to the Obi.Check the wiring between the Obi and the phone for frays.Make sure the equipment isn't installed near high power devices or fuse boxes. (Like a microwave) This would more likely result in a buzz or hum noise.
lk96:
If there are excessive packet losses, then the incoming calls may sound as "crackling".
This will be especially true for G711 coded calls which I think is the default encoding.
Other codecs may try to do some packet loss compensation and you may hear a "hssshing" sound.
This is quite common on cell phone for example.
So in addition to what was said in the previous posting, you should keep and eye or measure
your internet connectivity.
L.
Lavarock7:
It may depend upon your type of telephone.
First a history lesson (because it *might* be your problem if you have an old telephone.
Decades ago we used to use analog phones that hung on the wall or sat on the desk and were built to the then standard of the telephone company. They had a screw-type plastic cup that covered the mouthpiece and earpiece. This handheld unit connected to the telephone base with a coiled cord. The mouthpiece was a carbon granule disc and could exhibit what was called "carbon granule compaction". If you removed the mouthpiece and gently rapped it on the desk, the problem went away (for a while).
Although these telephone are quite old, they are still in use by many of us. I still have one hanging on the wall (a touchtone phone).
Googling "telephone mouthpiece" will show the type I am talking about.
Also, the small plastic RJ-11 connectors and similar smaller ones used for handsets have their contacts automatically cleaned when inserting and removing the connector, but they can lose contact with the spring fingers after a while.
It doesn't matter which type of phone you have, they all connect to the Obi through a modular wire and that may well be where the problem lies. The suggestion above to try another phone is correct.
ipse:
Quote from: Lavarock7 on January 02, 2013, 09:58:45 am
Decades ago we used to use analog phones that hung on the wall or sat on the desk and were built to the then standard of the telephone company. They had a screw-type plastic cup that covered the mouthpiece and earpiece. This handheld unit connected to the telephone base with a coiled cord. The mouthpiece was a carbon granule disc and could exhibit what was called "carbon granule compaction". If you removed the mouthpiece and gently rapped it on the desk, the problem went away (for a while).
Dammit man! Why did you have to remind me how old I am to remember that time? :)
To OP: if at all possible move your OBI temporarily to have it connected to your router/cable modem/gateway via an Ethernet patch cord (to rule out wireless, eth over powerline, etc)...You would have to have pretty bad packet loss to see the symptoms you describe.
Maybe checking the RTP logs or your router logs (if you run Tomato or DD-WRT or some intelligent f/w that has logging) might also help.
Also, you can try GV from a computer, etc and see the difference - if any.
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