[Asterisk-Users] Stay away from Grandstream!

[Steve Underwood]

Erick Baum wrote:

> We have 50 Grandstream's that we purchased about 3 months ago.  
> They're all at one site and we've had nothing but trouble with all the 
> phones.  The echo is the worst problem of all.  We had to upgrade from 
> the default 1.0.1.9 <http://1.0.1.9> firmware to the 1.0.1.12 
> <http://1.0.1.12> "beta" to get the speakerphone to work properly.  
> Once we did that, there is now a bad echo if one of the GXP users 
> turns their volume up too high, the other party can hear an echo.  If 
> the GXP user turns their volume down a bit, the echo starts to go 
> away.  This happens internally from GXP to GXP as well as with outside 
> callers.  At first Grandstream didn't want to admit that they knew 
> about this or that they'd even ever heard of this problem before.  But 
> they finally at least said they would have an engineer check into it.  
> Then after some research online I come to find that lots of people are 
> having the echo issue with the newer firmware and they had also 
> notified Grandstream months ago.  So they know about the problem.
>  

[...]

Well you could buy Polycoms, except they have the same problem.
Or the Snoms... oh, yeah, they have this too
Or the Sipuras... damn, same problem

It would be interesting to see someone compile a list of phone which 
echo cancel the handset properly.

Regards,
Steve