The call forward all calling search space activation policy is a configuration parameter that has been added in ccm version 4.x and above.This is a system level as well as user level parameter.
If it is applied to line it will take priority above the system level service parameter.
Now there are two approach to implement call forwarding in case of cisco,Lets discuss it one by one
By default the global parameter is to use the "With Configured CSS",This mean that the call forwarding will use the explicit configured CSS in the line level next to the forwading number in line setting.If this CSS is not proper the call will fail.
In the second approach we apply "With activating device/Line CSS", in this case no need to explicity tell the CUCM to use separate CSS for call forwarding instead the CUCM will derive it from the Line/device setting of the phone that means The line CSS of phone will be the primary CSS for Call forward and the device CSS will be as a secondary CSS for the Call forward .
Now one point i want to mention here is that if you are using CFWall button to forward a call then the CSS for the call forward will be updated by the "With activating device/Line CSS" approach but if you are confiruing a Call forward all number from CUCM admin page the Call forward CSS will not be updated by this approach ,this is very weird so ask the user to do there call forward from Phone ifyou are using the second approach "With activating device/Line CSS"
If it is applied to line it will take priority above the system level service parameter.
Now there are two approach to implement call forwarding in case of cisco,Lets discuss it one by one
By default the global parameter is to use the "With Configured CSS",This mean that the call forwarding will use the explicit configured CSS in the line level next to the forwading number in line setting.If this CSS is not proper the call will fail.
In the second approach we apply "With activating device/Line CSS", in this case no need to explicity tell the CUCM to use separate CSS for call forwarding instead the CUCM will derive it from the Line/device setting of the phone that means The line CSS of phone will be the primary CSS for Call forward and the device CSS will be as a secondary CSS for the Call forward .
Now one point i want to mention here is that if you are using CFWall button to forward a call then the CSS for the call forward will be updated by the "With activating device/Line CSS" approach but if you are confiruing a Call forward all number from CUCM admin page the Call forward CSS will not be updated by this approach ,this is very weird so ask the user to do there call forward from Phone ifyou are using the second approach "With activating device/Line CSS"
Yes. It is weird that admins cannot do anything with device/line approach. Is it because of any bug or the developers has not looked into such a situation?
ReplyDelete