[asterisk-bugs] [JIRA] (ASTERISK-23723) Asterisk and SIP Presence

[Michael L. Young (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-23723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael L. Young updated ASTERISK-23723:
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    Component/s:     (was: Channels/chan_pjsip)

> Asterisk and SIP Presence
> -------------------------
>
>                 Key: ASTERISK-23723
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23723
>             Project: Asterisk
>          Issue Type: Improvement
>      Security Level: None
>          Components: Channels/chan_sip/Subscriptions
>    Affects Versions: 11.7.0
>         Environment: Ubuntu 14.04 with Asterisk 11.7
>            Reporter: Dennis Guse
>            Severity: Minor
>
> Asterisk does only support to provide the status of an extension via SIP Presence (RFC 3856) via hints (providing server-side generated state, e.g. unregistered, idle, busy) and the status set in the Dialplan via PRESENCE_STATE. On status changes notifies are send to all subscribed SIP clients.
> However, Asterisk does not allow to set the presence state via SIP Presence as defined in RFC3856 since it is not subscribing of a registered SIP client that is hinted in the dialplan. Therefore, a clients do not send NOTIFY on presence change to Asterisk.
> Solution so far: use another SIP server to handle presence properly is quite complicated in small scale setups. 
> https://www.mail-archive.com/asterisk-dev@lists.digium.com/msg34496.html
> Basically two things are missing here. First Asterisk should have an option to SUBSCRIBE on hinted SIP clients and second process NOTIFY messages of subscribed clients to update PRESENCE_STATE.
> Issue was together with Frank Haase.



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