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-rw-r--r--channels/sig_pri.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/channels/sig_pri.c b/channels/sig_pri.c
index 5def34c23..48c8c33d7 100644
--- a/channels/sig_pri.c
+++ b/channels/sig_pri.c
@@ -2160,7 +2160,9 @@ static void *pri_ss_thread(void *data)
#endif /* defined(ISSUE_16789) */
sig_pri_set_echocanceller(p, 1);
+ ast_channel_lock(chan);
ast_setstate(chan, AST_STATE_RING);
+ ast_channel_unlock(chan);
res = ast_pbx_run(chan);
if (res) {
ast_log(LOG_WARNING, "PBX exited non-zero!\n");