SIP:from-change: Difference between revisions
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(New page: RFC-4916 allows From/To-URIs to change in mid-dialog requests as long as their tags stay the same, because only the tags are required for dialog identification.) |
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RFC-4916 allows From/To-URIs to change in mid-dialog requests as long as their tags stay the same, because only the tags are required for dialog identification. | RFC-4916 allows From/To-URIs to change in mid-dialog requests as long as their tags stay the same, because only the tags are required for dialog identification. | ||
innovaphone devices support this RFC in order to keep the remote party in track of changing connected party (e.g. call transfer). | |||
Example: | |||
Initial INVITE from provider: | |||
To: <sip:+3726645340@pbx.elion.ee;user=phone>;cscf | |||
<font color="grey">From: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348</font> | |||
1st re-INVITE from IP800: | |||
From: "Tarmo Reineberg" <sip:+3726645340@pbx.elion.ee;user=phone>;tag=1318660853 | |||
<font color="grey">To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348</font> | |||
2nd re-INVITE from IP800: | |||
From: "Tarmo Reineberg" <sip:+3726645340@pbx.elion.ee;user=phone>;tag=1318660853 | |||
<font color="grey">To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348</font> | |||
3rd re-INVITE from IP800: | |||
From: "Tarmo Reineberg" <sip:+3726645340@pbx.elion.ee;user=phone>;tag=1318660853 | |||
<font color="grey">To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348</font> | |||
4th re-INVITE from IP800: | |||
<font color="red">From: "Risto Kiilberg" <sip:sip.P00236306@pbx.elion.ee>;tag=1318660853</font> | |||
<font color="grey">To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348</font> | |||
5th re-INVITE from IP800: | |||
<font color="red">From: "Risto Kiilberg" <sip:sip.P00236306@pbx.elion.ee>;tag=1318660853</font> | |||
<font color="grey">To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348</font> | |||
Revision as of 10:28, 19 January 2011
RFC-4916 allows From/To-URIs to change in mid-dialog requests as long as their tags stay the same, because only the tags are required for dialog identification.
innovaphone devices support this RFC in order to keep the remote party in track of changing connected party (e.g. call transfer).
Example:
Initial INVITE from provider: To: <sip:+3726645340@pbx.elion.ee;user=phone>;cscf From: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348 1st re-INVITE from IP800: From: "Tarmo Reineberg" <sip:+3726645340@pbx.elion.ee;user=phone>;tag=1318660853 To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348 2nd re-INVITE from IP800: From: "Tarmo Reineberg" <sip:+3726645340@pbx.elion.ee;user=phone>;tag=1318660853 To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348 3rd re-INVITE from IP800: From: "Tarmo Reineberg" <sip:+3726645340@pbx.elion.ee;user=phone>;tag=1318660853 To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348 4th re-INVITE from IP800: From: "Risto Kiilberg" <sip:sip.P00236306@pbx.elion.ee>;tag=1318660853 To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348 5th re-INVITE from IP800: From: "Risto Kiilberg" <sip:sip.P00236306@pbx.elion.ee>;tag=1318660853 To: "Elo Eesmae" <sip:+3726755706@P01047948.pbx.elion.ee;user=phone>;tag=193437348