Support Services - What do I look for in a packet capture if the voicemail light does not turn on?
If you are having an issue with voicemails being left but the light on your phone not coming on, do the following:
In Switchvox /admin go to server > advanced debugging
Start a debugging session and choose packet capture with a duration of 30 minutes and capture all traffic
Leave a voicemail on a phone and hang up
Stop the packet capture and download it
Get the IP address of the phone you left the voicemail on
Open the packet capture in Wireshark and filter for the IP of the phone (ip.addr==IPofPhone)
The screen shot below shows the NOTIFY packet you will be looking for, pay attention to the Sequence Number in the Header and the Message Body information should read Messages-Waiting: yes/r/n
You will then want to see if there is a 200 OK reply from the phone and that packet should have the same Sequence Number
If there is no 200 OK reply then the NOTIFY is not making it to the phone, have your network admin check the port the NOTIFY was sent on, usually 5060
