Cisco CME: How To Know If Someone Is Actively Using An Analog Line

I have always liked Cisco CME (unless its on a UC500).  Its always been a very reliable phone system for my customers that have it (again, unless its on the UC500 platform).  Run CME on a real Cisco router and you have a winner.

Sometimes I have to troubleshoot calls coming in on an analog line.  So its important to be able to figure out what is happening when you are calling in.  OR, if you just need to be able to see when no one is one an external call, for whatever reason, there is a good way to check it out without going all around the office to verify no one is on the phone.

Below, in this capture, you will see in yellow that there is an incoming call coming in.  No one has answered the phone just yet.  Its still ringing.  Use the 'show voice call summary' command:

UC520DrU#sh voice call sum

PORT           CODEC     VAD VTSP STATE            VPM STATE

============== ========= === ==================== ======================

0/0/0         -          -  -                                              FXSLS_ONHOOK

0/0/1         -          -  -                                             FXSLS_ONHOOK

0/0/2         -          -  -                                             FXSLS_ONHOOK

0/0/3         -          -  -                                             FXSLS_ONHOOK

0/1/0         -          -  -                                             FXOLS_ONHOOK

0/1/1         -          -  -                                             FXOLS_ONHOOK

0/1/2         g711ulaw   n             S_ALERTING      FXOLS_PROCEEDING

0/1/3         -          -  -                                             FXOLS_ONHOOK

Below, in orange, you can use the same command as above to see that the call actually did connect.

UC520DrU#sh voice call sum

PORT           CODEC     VAD VTSP STATE            VPM STATE

============== ========= === ==================== ======================

0/0/0         -          -  -                                               FXSLS_ONHOOK

0/0/1         -          -  -                                               FXSLS_ONHOOK

0/0/2         -          -  -                                              FXSLS_ONHOOK

0/0/3         -          -  -                                             FXSLS_ONHOOK

0/1/0         -          -  -                                             FXOLS_ONHOOK

0/1/1         -          -  -                                             FXOLS_ONHOOK

0/1/2         g711ulaw   n              S_CONNECT     FXOLS_CONNECT

0/1/3         -          -  -                                             FXOLS_ONHOOK

Thats a very useful command when needing to know if someone is on an external call on an analog line.