Only set DTMF information if an RTP structure exists

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@44788 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 6cb424564df77c5d4bf0fe26f537ae424231450f..dfec3953d62fb8bd073456bd6d17bac4a2059f04 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -12994,8 +12994,11 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
                get_rdnis(p, NULL);                     /* Get redirect information */
                extract_uri(p, req);                    /* Get the Contact URI */
                build_contact(p);                       /* Build our contact header */
-               ast_rtp_setdtmf(p->rtp, ast_test_flag(&p->flags[0], SIP_DTMF) != SIP_DTMF_INFO);
-               ast_rtp_setdtmfcompensate(p->rtp, ast_test_flag(&p->flags[1], SIP_PAGE2_RFC2833_COMPENSATE));
+
+               if (p->rtp) {
+                       ast_rtp_setdtmf(p->rtp, ast_test_flag(&p->flags[0], SIP_DTMF) != SIP_DTMF_INFO);
+                       ast_rtp_setdtmfcompensate(p->rtp, ast_test_flag(&p->flags[1], SIP_PAGE2_RFC2833_COMPENSATE));
+               }
 
                if (!replace_id && gotdest) {   /* No matching extension found */
                        if (gotdest == 1 && ast_test_flag(&p->flags[1], SIP_PAGE2_ALLOWOVERLAP)) {