eG Monitoring
 

Measures reported by Exc2013UnifiMsgTest

How good a user's voice mail experience with Exchange is depends upon how quickly Unified Messaging processes incoming calls, resolves the caller IDs, and delivers the service. Frequent call failures, unexpected call disconnects, and high call latencies not only impact the users' voice mail experience, but also provoke users to doubt the efficiency of Unified Messaging. If such doubts are to be avoided and user confidence on Unified Messaging is to be improved, administrators should use the Exc2013UnifiMsgTest test at regular intervals to check the overall health and performance of Unified Messaging and proactively detect performance bottlenecks. This way, administrators can quickly initiate the required remedial measures and can clear the bottleneck, before end-users complain.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Succ_cal_res Indicates the percentage of caller IDs that were resolved successfully. Percent A high value is desired for this measure.
Succ_ext_res Indicates the percentage of successful attempts to resolve caller IDs that contained no “@” or “+” signs and were of the same length as the dial plan's extension. Percent A high value is desired for this measure.
Avg_cal_dur Indicates the average duration of calls since the service was started. Secs  
Avg_mwi_lat Indicates the average time from the moment a voice mail event occurs and Unified Messaging receives confirmation from the IP gateway that the message was delivered. Secs This average is calculated over the last 50 messages.

A consistent rise in this value is indicative of poor Unified Messaging performance.

Cal_dur_exc Indicates the number of calls that were disconnected because they exceeded the UM maximum call length. Number The value of this measure includes all types of calls, including fax calls.
Cal_dis_fail Indicates the total number of calls that disconnected after too many user entry failures. Number  
Cur_cal Indicates the number of calls that are currently connected to the UM server. Number This is a good indicator of the current workload on the UM server.
Cur_fax_cal Indicates the number of fax calls that are currently connected to the UM server. Number Voice calls become fax calls after a fax tone is detected.

This is a good indicator of the current fax call workload on the UM server.

Cur_sub_cal Indicates the number of logged on subscribers who are currently connected to the UM server. Number This is a good indicator of the current user load on the UM server.
Cur_voice_cal Indicates the number of voice mail calls that are currently connected to the Unified Messaging server. Number  
Del_cal Indicates the number of calls that experienced delays longer than 2 seconds. Number Ideally, the value of this measure should be 0. A high value indicates that too many calls are delayed. The reason for the delay should then be investigated and resolved.
Usr_res_lat Indicates the average response time for the system to respond to a user request. Secs A high valu or a steady increase in this value is indicative of the poor responsiveness of the UM server.