We currently have three sites that have 7960 phones deployed at each site. The phones are running firmware version 5.0(4.0), a rather old version. They are using SCCP to register with a CallManager running v3.3. At one specific site the 7960s are randomly dropping calls and the PCs that "piggy-backs" off of the phone shows that the NIC has "limited ot no connectivity". It is like the phone power cycles without actually power cycling. The phones are connected to a 3560-24 PoE running IOS version 12.2(25)SEB2. The other sites are running the exact same hardware and software versions as the "affected" site and they report no issues whatsoever. Voice traffic is in its own VLAN and there are no bandwidth congestion issues or general connectivity problems. We even went as far as taking a 3560 from a "working" site and temporarily installing it at the "affected" site, but the issue continues. We are planning to run a packet sniffer to see waht traffic is tranversing one of the affected phones.
Has anyone experienced anything like this before? Perhaps someone could point me in the right direction as what my next step should be.
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
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