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-rw-r--r--channels/chan_sip.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 249672729..cdf020ad7 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -17661,7 +17661,10 @@ static struct sip_pvt *get_sip_pvt_byid_locked(const char *callid, const char *t
frommismatch = !!strcmp(fromtag, sip_pvt_ptr->theirtag);
tomismatch = !!strcmp(totag, sip_pvt_ptr->tag);
- if (frommismatch || tomismatch) {
+ /* Don't check from if the dialog is not established, due to multi forking the from
+ * can change when the call is not answered yet.
+ */
+ if ((frommismatch && ast_test_flag(&sip_pvt_ptr->flags[1], SIP_PAGE2_DIALOG_ESTABLISHED)) || tomismatch) {
sip_pvt_unlock(sip_pvt_ptr);
if (frommismatch) {
ast_debug(4, "Matched %s call for callid=%s - pedantic from tag check fails; their tag is %s our tag is %s\n",