We've got a problem with callback function for Cisco IPPhone 7905: User dials another extention from IP Phone 7905. If that extention is busy he tries to press CallBack Softkey, but phone doesn't respond to it... Although this softkey is active. I analyzed CCM logs and find out that CallManager (4.1.3) "sees" that user presses CallBack Button (phone sends message "SoftKeyEvent" to CCM). But nothing happens after this: user can press CallBack Softkey again and again and CCM will still see Phone's messages. In normal scenario after receiving "SoftKeyEvent" from IP Phone CCM should respond with "StopTone" and "SetLamp(off)"
This problem is observed only at one phone (I hope)... At least from my tsting 7905 CallBack works perfectly.
I already changed softkey templates. Also I changed places of CallBack softkey (third button to second button) but it doesn't seems to be a right solution.
These are always tough aren't they! Next time you are at the customers site can you try to duplicate the problem again. Perhaps someone already had the far end (called)phone on "Callback" when the user who reported the problem tried to use "Callback" as well. My understanding of this feature is that only one person/user can initiate "Callback" against a given extension at any time.This would explain why it worked for you and not them.
The second thing that I would try is to see if the problem phone can initiate callback against other extensions?
The last thing that I would do is trade your phone with the affected phone and see if it makes any difference.
Good stuff! I am glad to hear this is resolved. I wanted to clear up one note from earlier in this thread where I thought the "called" phone could only have one callback against it at any given time. Here is the actual note;
The calling phone only supports one active Call Back request. The called phone can support multiple Call Back requests.
Cisco Call Back only supports spaces and digits 0 through 9 for the name or number of the calling or called party. To work with Cisco Call Back, the name or number of the calling or called party cannot contain # or * (pound sign or asterisk).
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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 ...