Hello,
I am seeing a strange issue and curious how many others are seeing this issue. We are using the Cisco 8861 IP phone and have connected them up to our wireless. They work great and would love to deploy more. But have noticed something any time we upgrade our Cisco Wireless LAN Controller. After a WLC upgrade, obviously the WLC reboots to load the new code and the Access Points need to reboot to download and load the new code. But after the wireless upgrade the 8861 IP phones do not re-register with the Cisco Call Manager. Phone sits with a message of either verify your network or registering.
During troubleshooting the IP phones are connected to wireless and associated, all looks good. But phones will not register with the call manager. Forcing a deauthenticate on the WLC will not force phone to register but adding and removing the phone to the WLC exclusionlist will get the phones to register. Of course rebooting the phone will get phone to register, but a pain having to get someone to reboot phones at a remote site.
Anyone else seen an issue similar to this. I would think that when the APs reboot the phone will recognize that the network is no longer available and reconnect to wireless, when the APs are back online, and re-register back with the Call Manager. Am I hoping too much for these IP phones to behave like any other wireless device and just work when wireless becomes unavailable for a second?
