overlap receiving: automatically send CALL PROCEEDING when dialplan starts

Following Q.931 5.2.4
When the user has determined that sufficient call information has been received the
user shall stop T302 and send CALL PROCEEDING to the network.

Previously timeouts were possible if the dialplan took a long time to issue any
response back to the network.

Verified that our local TELCO also does the same.

(issue #16789)
Reported by: alecdavis
Patches:
      overlap_receiving_trunk.diff.txt uploaded by alecdavis (license 585)
Tested by: alecdavis

(closes issue #16789)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@249364 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_dahdi.c b/channels/chan_dahdi.c
index 4b6052107299b913201356e9322301f3cdabd1f8..cecbfa46bfe290614ebde5b613d013710ee83938 100644 (file)
--- a/channels/chan_dahdi.c
+++ b/channels/chan_dahdi.c
@@ -6626,7 +6626,20 @@ static void *ss_thread(void *data)
                if (ast_exists_extension(chan, chan->context, exten, 1, p->cid_num)) {
                        /* Start the real PBX */
                        ast_copy_string(chan->exten, exten, sizeof(chan->exten));
-                       if (p->dsp) ast_dsp_digitreset(p->dsp);
+                       if (p->dsp) {
+                               ast_dsp_digitreset(p->dsp);
+                       }
+                       if (p->pri->overlapdial & DAHDI_OVERLAPDIAL_INCOMING) {
+                               if (p->pri->pri) {              
+                                       if (!pri_grab(p, p->pri)) {
+                                               pri_proceeding(p->pri->pri, p->call, PVT_TO_CHANNEL(p), 0);
+                                               p->proceeding = 1;
+                                               pri_rel(p->pri);
+                                       } else {
+                                               ast_log(LOG_WARNING, "Unable to grab PRI on span %d\n", p->span);
+                                       }
+                               }
+                       }
                        dahdi_enable_ec(p);
                        ast_setstate(chan, AST_STATE_RING);
                        res = ast_pbx_run(chan);