switch to INFO instead of nothing when no 2833 was found in sdp

src/mod/endpoints/mod_sofia/sofia_glue.c

@@ -4839,9 +4839,9 @@ uint8_t sofia_glue_negotiate_sdp(switch_core_session_t *session, const char *r_s
 					}
 				}
 			} else {
-				switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Disable 2833 dtmf\n");
-				switch_channel_set_variable(tech_pvt->channel, "dtmf_type", "none");
-				tech_pvt->dtmf_type = DTMF_NONE;
+				switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "No 2833 in SDP.  Disable 2833 dtmf and switch to INFO\n");
+				switch_channel_set_variable(tech_pvt->channel, "dtmf_type", "info");
+				tech_pvt->dtmf_type = DTMF_INFO;
 				te = tech_pvt->recv_te = 0;
 			}