diff --git a/src/switch_rtp.c b/src/switch_rtp.c
index 13fe1b3711..284efe8d07 100644
--- a/src/switch_rtp.c
+++ b/src/switch_rtp.c
@@ -948,16 +948,25 @@ SWITCH_DECLARE(switch_status_t) switch_rtp_add_crypto_key(switch_rtp_t *rtp_sess
 	rtp_session->crypto_keys[direction] = crypto_key;
 
 	memset(policy, 0, sizeof(*policy));
-
+	
 	switch (crypto_key->type) {
 	case AES_CM_128_HMAC_SHA1_80:
 		crypto_policy_set_aes_cm_128_hmac_sha1_80(&policy->rtp);
+		if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
+			switch_channel_set_variable(channel, "sip_has_crypto", "AES_CM_128_HMAC_SHA1_80");
+		}
 		break;
 	case AES_CM_128_HMAC_SHA1_32:
 		crypto_policy_set_aes_cm_128_hmac_sha1_32(&policy->rtp);
+		if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
+			switch_channel_set_variable(channel, "sip_has_crypto", "AES_CM_128_HMAC_SHA1_32");
+		}
 		break;
 	case AES_CM_128_NULL_AUTH:
 		crypto_policy_set_aes_cm_128_null_auth(&policy->rtp);
+		if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
+			switch_channel_set_variable(channel, "sip_has_crypto", "AES_CM_128_NULL_AUTH");
+		}
 		break;
 	default:
 		break;