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

[John Todd]

Paul -
   Yes, your description is correct.

- moving the phone (no ethernet passthrough) results in no symptoms
- testing at the same location with no ethernet passthrough is not 
possible during "real" traffic transport, since there's only one 
ethernet in that cube
- comments about pingfloods: there is minimal traffic on this 
network, and no pingfloods or other data directed at the Cisco phone. 
Other phones of identical configuration on the same subnet/collision 
domain/switch show no symptoms.


Interestingly, there was a followup post that talked about cell phone 
radiation causing lockups on the poster's 7960.  There was an old 
AT&T 7406 Plus phone located _directly_ next to the 7960 in question 
in my circumstance.  I have since moved the 7406 away from the 7960; 
let's see if perhaps that is the culprit due to spurious RF 
interference.


JT



At 4:59 PM -0800 12/14/03, Paul Mahler wrote:
>
>So do I have this right?  You have a 7960 hooked up to your network. You
>have a PC plugged into the second Ethernet port of the phone. This 7960
>freezes.
>
>If you move the phone somewhere else in the office, without the PC, it
>doesn't freeze?  Does it freeze when it's in the same location, but the PC
>isn't plugged into it? That is, does this happen only when a PC is plugged
>into the phone?
>
>Paul
>
>
>Paul Mahler
>mail:pmahler at signate.com
>phone: 650.207.9855
>fax: 877.408.0105
>
>-----Original Message-----
>From: asterisk-users-admin at lists.digium.com
>[mailto:asterisk-users-admin at lists.digium.com] On Behalf Of John Todd
>Sent: Sunday, December 14, 2003 2:59 PM
>To: asterisk-users at lists.digium.com
>Subject: [Asterisk-Users] Cisco 7960 lockups - any experiences?
>
>
>This is almost certainly not an Asterisk-specific posting, but due to
>my inability to find a VoIP-focused Cisco list, I'll post here in the
>hopes of finding a more diverse user community.
>
>I am using a Cisco 7960 (version 6.0 SIP firmware) with Asterisk, and
>have been experiencing situations where the phone locks up.  "Locks
>up" means that the bottom part of the screen ("Your current options"
>and the redial/newcall/cfwdall keys) disappears, and all keys on the
>keypad are non-functional except for the *-6-settings reboot keys.
>
>Previous software (4.4) exhibited the same symptoms.  I replaced the
>7960 with a brand new 7960G, thinking it was bad hardware.  Same
>symptoms.  I replaced the power supply, thinking that perhaps could
>be the problem  Same symptoms.  I upgraded to 6.0.  Same symptoms.  I
>replaced the ethernet cables.  Same symptoms.  I invoked an ancient
>curse-removal spell involving chicken bones and eye of newt over the
>phone.  Same symptoms.  A phone elsewhere in the same office (same
>switch, etc) works with no problems, but does not have a PC hooked to
>the 'PC' ethernet port.  In fact, the first 7960 I tried, with the
>swapped out power supply, works well elsewhere.
>
>I have used 79xx boxes in many circumstances, and all have performed
>admirably.  However, I rarely have configured them so that a PC is
>connected to the other side of the device.  The PC is running Windows
>XP, and sees mild SSH/email/web traffic.  I cannot say if there is a
>correlation between traffic volume and failure intervals; I have no
>data.
>
>The only thing that remains the same is the PC on one side, and the
>switch port on the other.  Previously, the PC attached to that switch
>port had worked without any problems for quite some time before I put
>the 7960 in place.  Even if the problem is the PC or the switchport,
>a failure or malfunction on one of those two components should not
>cause the phone to malfunction.  If it is a problem with the 7960
>pushing traffic across the tiny built-in switch, then we have a real
>problem on our hands that Cisco had better fix, pronto.
>
>I would appreciate reports of others as to similar issues or
>resolutions which they found effective.
>
>JT
>
>_______________________________________________
>Asterisk-Users mailing list
>Asterisk-Users at lists.digium.com
>http://lists.digium.com/mailman/listinfo/asterisk-users
>
>_______________________________________________
>Asterisk-Users mailing list
>Asterisk-Users at lists.digium.com
>http://lists.digium.com/mailman/listinfo/asterisk-users