Thank you for the
information, we are working on the firmware level as informed by
Nish to resolve the
disassociation issue.
The Poe Outdoor is
designed to exactly check the power supply at input and output side.
http://www.smartbridges.com/new/products/po.php
Some diagnostic
features are
- Auto�sensing of
cable length
- Power requirement
sensing for connected device
- Detection of low
Voltage supply
- Low Load
Resistance detection
- Detection of Short
Circuits
- Detection of
moisture in cable
Best
Regards,
-----Original
Message-----
From: Sevak
Avakians [mailto:[EMAIL PROTECTED]
Sent: Tuesday, September 09, 2003 11:33
PM
To:
[EMAIL PROTECTED]
Subject: RE: [smartBridges]
dis-association again?!
Nish,
Thanks for at least
re-assuring me that you guys are looking into it!
I have a suspicion of
what may be happening. I've noticed that those who have this issue are
also the same customers who have maybe one or two power strips with every
electronic product imaginable plugged into it. I see this alot, but it
doesn't seem to occur for everyone. Maybe some of these customers keep
the other electronics turned off, and everything is ok until they start
turning more things on? I know that if there is a "brown-out" the radios
may not associate or may dis-associate. Many of these homes have old
electrical wiring -the type without a proper ground receptacle. With our
APPOs, we had to have the management re-wire the electricity in the basement
office to provide proper ground. This also seemed to help some of our
equipment work consistently.
If you guys think this may be the problem
(or "a" problem) perhaps SB can provide a software tool that measures input
power levels (hopefully without needing to add hardware)? Or have a
light on the powerShot to indicate faulty power levels?
Kind
regards,
Sevak
On Mon, 2003-09-08 at 11:25, Nish Park wrote:
Sevak,
We have been trying
to understand this �Occasional Dis-association issue� for quite some time but
it has been an illusive problem. We have been unable to reproduce the problem,
even after we brought units back from the field that exhibited the problem.
Below is what we know about it so far and what we are trying to do. Hopefully
this info may help in your situation.
The symptoms are - at
random intervals the airBridge will loose association and will not regain. A
simple power cycle, software reset or just doing rescan will establish the
connection. In a large majority of cases we find that reverting to the setting
of Long Pre-Amble (factory default) will clear the problem. Many other times
we find the combination of over powering the RF side with Amp tends to create
problem. And other extreme is that installations with low RSSI and LQ values
and not enough fade margins have this problem too. We even had people report
that just exchanging units from subscriber A to subscriber B took care of the
problem.
All this points to
the instability due to RF and interference related issues. In many cases it is
possible to clear the problem. Yet there are a few cases when these steps do
not help. It appears that in these instances, the re-associate will not happen
till it is rebooted. And due to the sporadic nature we have been unable to
track down the root cause of it.
In order to provide
some interim solution, we have developed a software utility �simpleStatus�
that acts as a watchdog timer and reset the unit under certain conditions.
This software is helping many users and you can get a copy by writing into the
support desk. This software is a slimmed down version of the simpleMonitor
without any configuration buttons and enough dancing lights so you can give it
to the subscribers without loosing control. Our next step is to try to put the
same code in the firmware.
As we have been doing
the research to find the root cause, interestingly we have learned that
virtually EVERY manufacturer�s equipment suffers from this symptom. We found
similar user complaints, similar manufacturer�s answers. Users coming up with
their home brew solutions like periodic pinging the devices, some even going
as far as hardware gizmos that would periodically power cycle the devices etc.
I am sure all of these things help in different cases and make the issue
smaller and smaller. We are also incorporating some of these items in our
newer products to increase the robustness. Some measures we understand and
some measures are incorporated for motherhood sake.
Hopefully someday we
all will get to the bottom of this unexplainable industry
phenomenon.
Nish
-----Original
Message-----
From: Sevak
Avakians [mailto:[EMAIL PROTECTED]
Sent: Monday, September 08, 2003 9:07
PM
To:
[EMAIL PROTECTED]
Subject: [smartBridges] dis-association
again?!
I posted this problem earlier hoping
that someone from sB would respond to my question, but they didn't
yet.
Would someone from sB tech support please tell me what is going on
here? Now, I have 3 customers who are having issues with the
airBridges. One day everything is ok, but a day or two later and they
cannot get onto the Internet at normal speeds. The speed is EXTREMELY
slow and usually just times out. 2 of these customers are within a few
meters of the access point and the 3rd is a block away. I've noticed
that if I unplug the airBridge and replug it back in, everything is ok
again.
Since I don't want to keep going to customers' homes to unplug
and replug airBridges, will sB please help me out with this issue? My
customers are very vocal in their community and will spread bad news about our
service if this issue isn't resolved.
Thank you,
Sevak
