[asterisk-bugs] [JIRA] (ASTERISK-24982) res_pjsip_mwi: Unsolicited MWI NOTIFY only sent on mailbox changes

[Joshua Colp (JIRA)]

Joshua Colp created ASTERISK-24982:
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             Summary: res_pjsip_mwi: Unsolicited MWI NOTIFY only sent on mailbox changes
                 Key: ASTERISK-24982
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24982
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Resources/res_pjsip_mwi
    Affects Versions: 13.3.2
            Reporter: Joshua Colp


Currently the res_pjsip_mwi module only sends unsolicited MWI NOTIFY messages when the state of a mailbox changes. This is problematic as it may cause a device to think no voicemail is present when it actually is.

The two cases where NOTIFY should be sent are:
1. On initial startup. So that all reachable clients have up to date MWI information a NOTIFY should be sent to them upon startup.
2. When a device registers. Since a device that is registering is most likely to have forgotten any previous MWI status (or did not have any to begin with) it should be sent a NOTIFY.

These, together with sending on mailbox state changes, allows a client to have up to date MWI information at all times.



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