[asterisk-users] Cisco SPA3102 Thoughts & Other Recommendations

[Andrew Hakman]

Did you try changing the FXO port impedance? Did you try resetting the
unit to factory defaults (on the IVR dial 73738# and then 1 to
confirm)? Did you by it from ebay and it shipped from hong kong or
similar? Did you try the linksys silver one on the same line as the
real Sipura one was on?

I ask because I have two of the the Linksys silver ones (and they are
from ebay from hong kong - supposedly "new in box" they are anything
but new in box - I've read that they were warranty returns shipped to
China to be destroyed, but instead the chinese attempt to patch them
up and sell them again - be careful on ebay). One doesn't ring the FXS
port properly as there is something wrong with the boost converter
that generates the -60V for ringing (and I've spent at least 4 or 5
hours looking at datasheets of the chips, testing parts with a
multimeter, looking at signals with a scope, and even swapping parts
between the one that works and the one that doesn't and can't figure
out what's wrong - I can hear a "tick tick tick..." noise that isn't
the relay, and the ethernet led dims with the clicks, like something
is breaking down and shorting at the high voltage), but both are
currently in service on two different PSTN lines and I have no echo
problems with them.

Andrew

On Wed, Nov 4, 2009 at 5:07 PM, Joseph <syscon780 at gmail.com> wrote:
> On 11/04/09 16:01, Andrew Hakman wrote:
>>On Wed, Nov 4, 2009 at 1:44 PM, Joseph <syscon780 at gmail.com> wrote:
>>> On 11/04/09 15:20, Adam Tauno Williams wrote:
>>> I have two of these and experience a lot of echo on PSTN line (FXS line works OK).
>>> The echo is almost impossible to get rid of, so test it first before you buy this unit; Google for "SPA3102 echo" and you will notice I'm not the only one.
>>
>>Is the SPA-3102 different than the SPA-3000 in this regard?
>>
>>I have 2 SPA-3000s and have no problems with echo on the FXO port. I
>>was thinking about buying some SPA-3102s as the 3000s are hard to find
>>now, so if the 3102 has the issue and the 3000 doesn't, I would sure
>>like to know about it. I won't buy any 3102s if that's the case.
>>
>>Andrew
>
> I have two original Sipura SPA-3000 (dark green boxes) and they work like a charm, no echo fax is going through IN/OUT every time) they work almost perfect.
> However, I bought a used one SPA-3000 (silver case) it was made after Linksys took over from Sipura and this unit is a piece of junk, it is even worse then
> SPA-3102, the PSTN line has so much echo it is impossible to conduct the conversation and trying to send or receive a fax fails every time; I've tried
> different firmware without any success, stay away from Linksys units.  \
> I think they couldn't fix it and sold the unit to Cisco :-/ (my guessing, I don't know what is the story), but they don't work for me.
> The only port I was able to use is FXS.
>
> So, look for luck somewhere else.
>
> --
> Joseph
>
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