[Asterisk-Users] Cisco 7960 lockups - any experiences?
pmahler at signate.com
Sun Dec 14 17:59:49 MST 2003
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
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?
mail:pmahler at signate.com
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
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.
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