Hi,Please assist.When incoming calls are forwarded from phone A to external number using the Call Forward All feature in Cisco CallManager (6.1.5.10000), and the incoming call is silent (No ring back).Incoming call ===> Phone A (CFwsALL) ==>To Extern...

I plan to upgrade my WiSM to the latest software version(v4.1.181.0). Is there any recommended procedure to upgrade the WiSM?I am running version s72033-ipservicesk9-mz.122-18.SXF5 on my cisco 6509-E sup720. thanks