[cisco-voip] 7942 POE issues with 3550 switch

James Buchanan jbuchanan at ctiusa.com
Wed Sep 16 09:17:51 EDT 2009


Hello,

 

I hit this and had to disable LLDP in order for them to work properly.
Upgrading from 8.4(2)to 8.4(3) was the ultimate fix, but of course the
catch-22 was that I couldn't push it until I could get the phones up.

 

Thanks,

 

James

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Countryman,
Edward
Sent: Monday, September 14, 2009 10:43 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] 7942 POE issues with 3550 switch

 

Recently attempted to deploy (6) brand new 7942 phones at one of my
smaller physician office sites.  The phones all exhibited erratic power
on behavior and would not complete the boot up.  I find it hard to
believe all six new phones are bad out of the box so I am wondering
about the network switch which is an older 3550 but running new IOS
(c3550-ipbasek9-mz.122-50.SE3.bin).   CCM 6.1.3 and the 7942s are
running sccp 8.4.2s.     Has this ever happened to anyone else?

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