[Asterisk-Users] Cisco 7960 lockups - any experiences?

[Nuno Cruz]

Hello John,

I have a similar story with one of mine..

If i use a cell phone near it, it reboots :)
The other ones are fine.. I think it's a hardware problem, but it only
reveals itself with the cell phone radiation :>

Sunday, December 14, 2003, 10:59:14 PM, you wrote:


JT> This is almost certainly not an Asterisk-specific posting, but due to
JT> my inability to find a VoIP-focused Cisco list, I'll post here in the
JT> hopes of finding a more diverse user community.

JT> I am using a Cisco 7960 (version 6.0 SIP firmware) with Asterisk, and
JT> have been experiencing situations where the phone locks up.  "Locks
JT> up" means that the bottom part of the screen ("Your current options"
JT> and the redial/newcall/cfwdall keys) disappears, and all keys on the
JT> keypad are non-functional except for the *-6-settings reboot keys.

JT> Previous software (4.4) exhibited the same symptoms.  I replaced the
JT> 7960 with a brand new 7960G, thinking it was bad hardware.  Same 
JT> symptoms.  I replaced the power supply, thinking that perhaps could
JT> be the problem  Same symptoms.  I upgraded to 6.0.  Same symptoms.  I
JT> replaced the ethernet cables.  Same symptoms.  I invoked an ancient
JT> curse-removal spell involving chicken bones and eye of newt over the
JT> phone.  Same symptoms.  A phone elsewhere in the same office (same
JT> switch, etc) works with no problems, but does not have a PC hooked to
JT> the 'PC' ethernet port.  In fact, the first 7960 I tried, with the
JT> swapped out power supply, works well elsewhere.

JT> I have used 79xx boxes in many circumstances, and all have performed
JT> admirably.  However, I rarely have configured them so that a PC is
JT> connected to the other side of the device.  The PC is running Windows
JT> XP, and sees mild SSH/email/web traffic.  I cannot say if there is a
JT> correlation between traffic volume and failure intervals; I have no
JT> data.

JT> The only thing that remains the same is the PC on one side, and the
JT> switch port on the other.  Previously, the PC attached to that switch
JT> port had worked without any problems for quite some time before I put
JT> the 7960 in place.  Even if the problem is the PC or the switchport,
JT> a failure or malfunction on one of those two components should not
JT> cause the phone to malfunction.  If it is a problem with the 7960 
JT> pushing traffic across the tiny built-in switch, then we have a real
JT> problem on our hands that Cisco had better fix, pronto.

JT> I would appreciate reports of others as to similar issues or 
JT> resolutions which they found effective.

JT> JT


-- 
Best regards,
 Nuno                            mailto:ncruz+asterisk at ist.utl.pt