If you're using central provisioning with the Linksys/Cisco Small
Business series phones and you leave the Message_Waiting option in the
config (which is the default, very stupid), the phones will reboot
every time they sync the config, if they have a voicemail waiting.

Check to see if the Linksys spontaneous reboots correlate with pulling
down the config (assuming you're using central provisioning) and make
sure you either comment or delete Message_Waiting from the config.

You may also want to see if there's any correlation with DHCP and the
phones renewing their IP. We put all of our phones on DHCP
reservations, so their IP doesn't/shouldn't change. I'm not sure what
the phone will do if it goes to renew its address and the DHCP server
hands it a different IP, it may cause the phone to reboot?

Cheers,
Gabe

On Wed, Mar 24, 2010 at 6:35 PM, Wellie Chao <wchao@yahoo.com> wrote:
> I am using Freeswitch and I have some phones that spontaneously reboot
> (often in the middle of a call).
>
> I did some searching around on the web, but didn't find any information
> that really applied to the problem I'm experiencing. I have a few dozen
> Polycom phones and a handful of Linksys phones of various models: Polycom
> IP301, IP320, IP331, IP430, IP501, IP601; also Linksys SPA901, SPA921,
> SPA941.
>
> I also have snom phones, but they don't reboot spontaneously. It's only
> the Polycom and Linksys phones that reboot spontaneously, and it seems to
> be correlated to call volume. Heavy usage of the Polycom and Linksys
> phones causes them to reboot more frequently (i.e. shorter duration
> between the reboots). For people making 50 calls a day, the Polycom phones
> spontaneously reboot every three days or so (and always on a call, it
> seems). For people making one or two calls a day, the Polycom will go
> months without a spontaneous reboot. This correlation between call volume
> and reboot frequency leads me to believe that there is some bug in the
> Polycom firmware, perhaps some of overflow condition that accumulates over
> time and eventually causes a crash (and subsequent reboot).
>
> I was wondering if anybody else experienced something similar, and whether
> anyone had developed a solution. One thing I am considering is to set up a
> script to reboot the Polycom phones in the middle of the night every day,
> which would hopefully prevent them from spontaneously rebooting during the
> day by preventing the phones from ever reaching the overflow condition (if
> that is indeed what causes the reboots). A nightly reboot would be a
> hackish way of fixing the problem, so I'd also love to hear if anybody has
> any other speculations on what might be causing the spontaneous reboots.
> We have phones in multiple buildings, and we've discovered that the
> spontaneous reboots happen on phones on different networks, so it's not
> specific to a particular LAN segment. For the most part, we are using the
> standard config files for the Polycom phones and for the Linksys phones.
>
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