[Asterisk-Users] GrandStream GSX-2000 strangeness

[Faris Raouf]

I have a really baffling problem.

A couple of months ago I purchased a pair of GrandStream GSX-2000 phones for
use with Asterisk.

At first all was well. But recently I've noticed terrible sound quality
problems. Basically the sound will "glitch" or stutter randomly from time to
time.

Now, what is interesting is that this happens even with the phone totally
disconnected from any network. You can hear it on the dial-tone that the
phone itself generates if you press SPEAKER or lift the handset, with no
network cable plugged in. So whatever is causing this glitching would seem
to be being generated within the phone itself, and not coming from an
external source. (It isn't the power, as the two phones are in different
buildings in different towns. Besides, both are connected to UPSs).

To me this seems to indicate a fault with the phones themselves. But for
both of them to develop the same fault at the same time seems odd. 

I asked on the voipuser.org forum if anybody else had had similar problems,
but everybody who responded said all was well with their phones.

But given the wider reach of this list, I thought I'd ask here as well.

Both phones have the latest firmware from the GS website.

Does anyone have any ideas? Has anyone had anything similar happen to them?

Faris.

p.s. This is my first post here. Please be gentle with me :-)