[cisco-voip] FXS module breaking

David Wilson dave at dcdata.co.za
Tue Mar 22 02:44:51 EST 2005 

Hi Eric,

:)
Thanks for your reply.
Apparently my client has logged a requested with Cisco in the last day. They 
will be attending to his query from here.

Thank you for your input anyways.


Kindest regards
David Wilson
_______________________________
D c D a t a
Tel +27 33 342 7003
Fax +27 33 345 4155
Cell +27 82 4147413
http://www.dcdata.co.za
support at dcdata.co.za
Powered by Linux, driven by passion !
_______________________________

"Computers are not intelligent. They only think they are."

----- Original Message ----- 
From: "Eric Knudson" <ericknudson at gmail.com>
To: "David Wilson" <dave at dcdata.co.za>
Cc: "Roland H. Alden" <ralden at ralden.com>; <cisco-voip at puck.nether.net>
Sent: Tuesday, March 22, 2005 9:29 AM
Subject: Re: [cisco-voip] FXS module breaking


> Perhaps you could request TAC perform an EFA(engineering failure
> analysis) on the dead fxs modules? It might actually be in their best
> interest if you keep getting RMA'd new vics :)
>
>
> On Tue, 22 Mar 2005 07:52:26 +0200, David Wilson <dave at dcdata.co.za> 
> wrote:
>> Hi Roland,
>>
>> Thanks for your reply.
>> Unfortnuately I don't have a diagram however the setup is very simple.
>>
>> At the remote office my client has a extension from their PBX into an FXO
>> port on Cisco router. A leased line then connects the remote office to 
>> the
>> local one. VOIP is sent over the leased line and breaks out an FXS port 
>> here
>> which plugs into my clients local PBX.
>>
>> For some reason the FXS port lasts for two weeks or so and then just 
>> dies.
>> Each time the FXS port needs to be replaced.
>>
>> Interesting one eh ? :)
>>
>> Kindest regards
>> David Wilson
>> _______________________________
>> D c D a t a
>> Tel +27 33 342 7003
>> Fax +27 33 345 4155
>> Cell +27 82 4147413
>> http://www.dcdata.co.za
>> support at dcdata.co.za
>> Powered by Linux, driven by passion !
>> _______________________________
>>
>> "Computers are not intelligent. They only think they are."
>>
>> ----- Original Message -----
>> From: "Roland H. Alden" <ralden at ralden.com>
>> To: "David Wilson" <dave at dcdata.co.za>
>> Sent: Saturday, March 19, 2005 5:42 PM
>> Subject: RE: [cisco-voip] FXS module breaking
>>
>> Hi David,
>>
>> I wasn't following the thread. Do you have a Visio diagram of exactly
>> what you have and what is connected to what? Clarity is the first step
>> :)
>>
>> -R
>>
>>
>> > -----Original Message-----
>> > From: cisco-voip-bounces at puck.nether.net
>> > [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of David Wilson
>> > Sent: Friday, March 18, 2005 10:12 PM
>> > To: cisco-voip at puck.nether.net
>> > Subject: Re: [cisco-voip] FXS module breaking
>> >
>> > Hi guys,
>> >
>> > I'm still really lost with this. Any assistance or ideas
>> > would be greatly appreciated.
>> >
>> > Kindest regards
>> > David Wilson
>> > _______________________________
>> > D c D a t a
>> > Tel +27 33 342 7003
>> > Fax +27 33 345 4155
>> > Cell +27 82 4147413
>> > http://www.dcdata.co.za
>> > support at dcdata.co.za
>> > Powered by Linux, driven by passion !
>> > _______________________________
>> >
>> > "Computers are not intelligent. They only think they are."
>> >
>> > ----- Original Message -----
>> > From: "David Wilson" <dave at dcdata.co.za>
>> > To: "Jim McBurnett" <jim at tgasolutions.com>; "Mike Armstrong"
>> > <mfa at crec.ifas.ufl.edu>; <cisco-voip at puck.nether.net>
>> > Sent: Friday, March 18, 2005 7:32 AM
>> > Subject: Re: [cisco-voip] FXS module breaking
>> >
>> >
>> > > Hi guys,
>> > >
>> > > How are you keeping ?
>> > > Still battling with this....
>> > > Seems that I was a little confused as to how this setup was
>> > working. You
>> > > were correct. The FXS module is plugged into their
>> > 'incoming' line ports
>> > > of their PBX, so there should not be an issue with voltage
>> > etc. from the
>> > > PBX The Cisco FXS module does not receive ringing voltage etc. it
>> > > transmits it to the PBX's incoming line.
>> > >
>> > > With regards to the module popping:
>> > > Could their router perhaps have the wrong FXS module in it
>> > ? Perhaps their
>> > > router is pushing out a higher voltage than the module
>> > should use ? Is
>> > > this possible ?
>> > > Are their different voltage requirements for different FXS modules ?
>> > > Thanks for your help so far.
>> > >
>> > > Kindest regards
>> > > David Wilson
>> > > _______________________________
>> > > D c D a t a
>> > > Tel +27 33 342 7003
>> > > Fax +27 33 345 4155
>> > > Cell +27 82 4147413
>> > > http://www.dcdata.co.za
>> > > support at dcdata.co.za
>> > > Powered by Linux, driven by passion !
>> > > _______________________________
>> > >
>> > > "Computers are not intelligent. They only think they are."
>> > >
>> > > ----- Original Message -----
>> > > From: "Jim McBurnett" <jim at tgasolutions.com>
>> > > To: "Mike Armstrong" <mfa at crec.ifas.ufl.edu>; "David Wilson"
>> > > <dave at dcdata.co.za>; <cisco-voip at puck.nether.net>
>> > > Sent: Thursday, March 03, 2005 3:58 AM
>> > > Subject: RE: [cisco-voip] FXS module breaking
>> > >
>> > >
>> > > Here is an idea for you:
>> > >
>> > > Go to Radio Shack- and buy one of these:
>> > >
>> > http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&cate
>> > gory%5Fnam
>> > > e=CTLG%5F011%5F008%5F002%5F000&product%5Fid=22%2D812
>> > >
>> > > Then get a spare PC, and connect it to the meter. Set it up
>> > to monitor
>> > > the voltage in and out of the card on each port for a
>> > period of time-
>> > > I'd say 24 hours per port..
>> > >
>> > > The links Mike sent  (THANKS MIKE, I was looking for
>> > those..) will help
>> > > you put some perspective to it.
>> > >
>> > > I am willing to say this might solve the puzzle.
>> > >
>> > > As an FYI, I have done this kind of thing before using a
>> > meter, albeit
>> > > older than this one.
>> > >
>> > > Let me what what you find.
>> > >
>> > > Thanks,
>> > >
>> > > Jim
>> > >
>> > >
>> > > -----Original Message-----
>> > > From: Mike Armstrong [mailto:mfa at crec.ifas.ufl.edu]
>> > > Sent: Wednesday, March 02, 2005 11:25 AM
>> > > To: David Wilson; cisco-voip at puck.nether.net
>> > > Subject: Re: [cisco-voip] FXS module breaking
>> > >
>> > > Wow.  "Just stops working" is a little ambiguous.  If a
>> > reboot of the
>> > > router doesn't help, then I think you can rule out software, and I
>> > > gather that replacing the module fixes things, so it's
>> > almost certainly
>> > > hardware.  If it were me, I'd just buy a couple of spares
>> > (check eBay)
>> > > and keep my Smartnet contract paid up.  After you send in a few for
>> > > replacement, eventually Cisco might get interested in
>> > finding out what's
>> > > wrong with them.  Even if you don't have a service
>> > contract, you might
>> > > persuade Cisco to analyze one to determine why it failed.  Here's a
>> > > couple of links to CCO tech docs that might help, but unfortunately
>> > > don't give a step-by-step troubleshooting
>> > > baedeker:
>> > >
>> > >
>> > http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_
>> > note09186a
>> > > 008011c7f3.shtml
>> > >
>> > >
>> > http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_
>> > note09186a
>> > > 0080094fac.shtml
>> > >
>> > > I'm still betting on an external problem that zaps the
>> > interface.  The
>> > > startup diagnostics would check out most of the inboard
>> > circuitry, I'd
>> > > guess, but can't do much to check the outside interface.
>> > If there's any
>> > > chance of that, a simple surge protector on the line might solve the
>> > > problem.  There may be a loopback test of some sort you
>> > could try, but I
>> > > couldn't find any info on that handily.
>> > >
>> > > mike
>> > >
>> > > ----- Original Message -----
>> > > From: "David Wilson" <dave at dcdata.co.za>
>> > > To: "Mike Armstrong" <mfa at crec.ifas.ufl.edu>;
>> > > <cisco-voip at puck.nether.net>
>> > > Sent: Wednesday, March 02, 2005 6:10 AM
>> > > Subject: Re: [cisco-voip] FXS module breaking
>> > >
>> > >
>> > >> Hi Mike,
>> > >>
>> > >> Thanks for your response.
>> > >> From what I can understand it seems the FXS module just
>> > stops working.
>> > > Are
>> > >> the some tests I could perhaps run in the router to give
>> > me more info
>> > > ?
>> > >>
>> > >>
>> > >> Kindest regards
>> > >> David Wilson
>> > >> _______________________________
>> > >> D c D a t a
>> > >> Tel +27 33 342 7003
>> > >> Fax +27 33 345 4155
>> > >> Cell +27 82 4147413
>> > >> http://www.dcdata.co.za
>> > >> support at dcdata.co.za
>> > >> Powered by Linux, driven by passion !
>> > >> _______________________________
>> > >>
>> > >> "Computers are not intelligent. They only think they are."
>> > >>
>> > >> ----- Original Message -----
>> > >> From: "Mike Armstrong" <mfa at crec.ifas.ufl.edu>
>> > >> To: <cisco-voip at puck.nether.net>; <dave at dcdata.co.za>
>> > >> Sent: Tuesday, March 01, 2005 1:39 PM
>> > >> Subject: [cisco-voip] FXS module breaking
>> > >>
>> > >>
>> > >>> What't the nature of the connection?  I'm wondering if an induced
>> > > current
>> > >>> is zapping the analog interface -- lightning, wire
>> > passing by a large
>> > >
>> > >>> load of some kind, etc.  Any more detail about exactly what
>> > > "breaking"
>> > >>> means?
>> > >>>
>> > >>> Mike Armstrong
>> > >>> UF/IFAS CREC
>> > >>> Lake Alfred, FL
>> > >>
>> > >
>> > > _______________________________________________
>> > > cisco-voip mailing list
>> > > cisco-voip at puck.nether.net
>> > > https://puck.nether.net/mailman/listinfo/cisco-voip
>> > >
>> >
>> > _______________________________________________
>> > cisco-voip mailing list
>> > cisco-voip at puck.nether.net
>> > https://puck.nether.net/mailman/listinfo/cisco-voip
>> >
>>
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