Have UC520 box, voicemail is working, but MWI light not light up after left the message. Following is the configuration for CUE.
number 8001... no-reg primary
number 8000... no-reg primary
and with two Test phones, with extenstion 810 and 811. the voice extension is 401, when extension 810 call 811, phone 811 trasfer to 401 with no anwser, left the messge, but no WMI light, go to extension 811, press "message" and could retrieve the message. if call 8000811 the phone 811 MWI light up, and call 8001811 the MWI light out.Attached please find the full UC520 and CUE configuration and the trace ccn stacksip dbug.Please shed some light on this, thanks in advance.
Did you try to capture "debug voice ccapi inout". My thoughts are since you may have changed the MWI numbers from A800 to 8000 maybe a dial-peer that matches 800 numbers is redirecting it somewhere else...
Also your dial-peer 1005 seems to be extra.. it is not needed and doesn't even match your WMI configurations. (where you testing?)
Also under your ephones you have mwi-line commands that are not needed.
Also have you checked to see if your setmwi.aef script exists or is corrupted?
I think I see the issue now.
In your CME config, you have...
bind control source-interface FastEthernet0/0
This means that signaling is expected to go here. You could change this to loopback 0, remove the bind command, or change the IP address in CUE of where you send to be the WAN IP address of the system.
Is there something in particular you are trying to accomplish with having the bind command there?