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Voice mail service of UMS system failed

Publication Date:  2019-07-26 Views:  289 Downloads:  1

Issue Description

UMS enables Voice mailbox service for U1930 , after the call transferring to voice mail box, the caller hears “welcome to the voicemail , goodbye”. He cannot leave any messages.

Alarm Information


Handling Process

1. reproduce the problem and make network analysis on UMS. We can find the “from header” in “invite” message: the number of called number is 8821.

2. Check the settings on webpage of UMS, user number set as 30438821

3. modify the number to 8821 and re-test, problem solved.

Root Cause

Most of this kind of problem is because wrong configuration of the UMS account.


Network analysis is a effective way to analyze problem of UMS