[Asterisk-Users] Cisco 12sp+ and 30VIP
Carlos Hernandez
carlosh at linuxservices.co.nz
Tue Aug 10 21:00:16 MST 2004
With the description you give, the first thing I think of is..
Some of those chips may be EEPROM memories, and they get erased with the
light..well infrared light to be more precise, and only if you remove
the cover stickers I am just guessing though, I have little information
on what actual chipsets you're working with.. or if these phones use
EEPROMS at all...
Other thing is you're not using static electricity grounding, and the
electronics of the equipment has been damaged, but again, I might be
wrong. You might be an expert (or knowledgeable or carefull) in handling
the chipsets...
Carlos
Mike Coakley wrote:
> I've searched high and lo and googled to I can't google no more... I
> knew that Cisco bought Selsius to get their VoIP solution but what I
> didn't know was that the 12sp+ is based upon an ITE-12 product that is
> apparently used at universities. I've taken two of the phones apart
> and started swapping parts and have looked up the IC's on the Internet...
>
> Anyway... After using the phones with chan_sccp the phones die for no
> apparent reason. No LCD. No nothing. About the only thing the phones
> do is make a static sound when the handset is lifted or speaker is
> pressed. Can't get the phones to work again. I've tried everything
> I've found. I've even blew the dust off my CallManager 2.4 CD's and
> loaded the phone images on my TFTP server. But once the phones go dead
> there is no more IP traffic from them.
>
> Normally I would assume that the phone is beyond repair but nothing is
> happening to the phones. They just stop working. Last one that stopped
> working happened today. Left it on overnight and this morning it was
> dead.
>
> Anyone have any ideas.
>
> Mike
>
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