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fix(sip-ua): remove tag from REGISTER refresh#62

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kbalt merged 1 commit into
kbalt:mainfrom
hkrutzer:hkr/fix-sip-ua-remove-tag-from-reg-rxytrvkwrqkk
Apr 16, 2026
Merged

fix(sip-ua): remove tag from REGISTER refresh#62
kbalt merged 1 commit into
kbalt:mainfrom
hkrutzer:hkr/fix-sip-ua-remove-tag-from-reg-rxytrvkwrqkk

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FreeSWITCH rejects the current REGISTER request message with 481 Call/Transaction Does Not Exist.

From RFC 3261 §8.1.1.2:

A request outside of a dialog MUST NOT contain a To tag; the tag in
the To field of a request identifies the peer of the dialog. Since
no dialog is established, no tag is present.

From RFC 3261 §10.2:

A REGISTER request does not establish a dialog. A UAC MAY include a
Route header field in a REGISTER request based on a pre-existing
route set as described in Section 8.1.

From RFC 3261 §8.1.1.2:

   A request outside of a dialog MUST NOT contain a To tag; the tag in
   the To field of a request identifies the peer of the dialog.  Since
   no dialog is established, no tag is present.

From RFC 3261 §10.2:

   A REGISTER request does not establish a dialog.  A UAC MAY include a
   Route header field in a REGISTER request based on a pre-existing
   route set as described in Section 8.1.
@kbalt kbalt merged commit 9e24ec3 into kbalt:main Apr 16, 2026
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2 participants