--- channels/chan_sip.c	(Asterisk 13.38.1)
+++ channels/chan_sip.c	(working copy)
@@ -10840,3 +10840,3 @@ static int process_sdp(struct sip_pvt *p
 		/* Ensure crypto lines are provided where necessary */
-		if (audio && secure_audio && !processed_crypto) {
+		if (p->rtp && audio && secure_audio && !processed_crypto) {
 			ast_log(LOG_WARNING, "Rejecting secure audio stream without encryption details: %s\n", m);
@@ -10844,3 +10844,3 @@ static int process_sdp(struct sip_pvt *p
 			goto process_sdp_cleanup;
-		} else if (video && secure_video && !processed_crypto) {
+		} else if (p->vrtp && video && secure_video && !processed_crypto) {
 			ast_log(LOG_WARNING, "Rejecting secure video stream without encryption details: %s\n", m);
@@ -10873,3 +10873,3 @@ static int process_sdp(struct sip_pvt *p
 
-	if (secure_audio && !(p->srtp && (ast_test_flag(p->srtp, AST_SRTP_CRYPTO_OFFER_OK)))) {
+	if (p->rtp && secure_audio && !(p->srtp && ast_test_flag(p->srtp, AST_SRTP_CRYPTO_OFFER_OK))) {
 		ast_log(LOG_WARNING, "Can't provide secure audio requested in SDP offer\n");
@@ -10885,3 +10885,3 @@ static int process_sdp(struct sip_pvt *p
 
-	if (secure_video && !(p->vsrtp && (ast_test_flag(p->vsrtp, AST_SRTP_CRYPTO_OFFER_OK)))) {
+	if (p->vrtp && secure_video && !(p->vsrtp && ast_test_flag(p->vsrtp, AST_SRTP_CRYPTO_OFFER_OK))) {
 		ast_log(LOG_WARNING, "Can't provide secure video requested in SDP offer\n");