Q921_LOG_ERROR   1039 src/isdn/Q921.c 			Q921Log(trunk, Q921_LOG_ERROR, "Failed to establish Q.921 link in %d retries\n", link->N200);
Q921_LOG_ERROR   2117 src/isdn/Q921.c 		Q921Log(trunk, Q921_LOG_ERROR, "Received UA frame in invalid state\n");
Q921_LOG_ERROR   2149 src/isdn/Q921.c 			Q921Log(trunk, Q921_LOG_ERROR, "Received UA frame is not a response to a request\n");
Q921_LOG_ERROR   2167 src/isdn/Q921.c 			Q921Log(trunk, Q921_LOG_ERROR, "Received UA frame is not a response to a request\n");
Q921_LOG_ERROR   2175 src/isdn/Q921.c 		Q921Log(trunk, Q921_LOG_ERROR, "Received UA frame in invalid state\n");
Q921_LOG_ERROR   2250 src/isdn/Q921.c 		Q921Log(trunk, Q921_LOG_ERROR, "Invalid DISC received in state \"%s\" (%d)", Q921State2Name(link->state), link->state);
Q921_LOG_ERROR   2802 src/isdn/Q921.c 		Q921Log(trunk, Q921_LOG_ERROR, "Invalid S frame type %d\n", sv);
Q921_LOG_ERROR   2853 src/isdn/Q921.c 				Q921Log(trunk, Q921_LOG_ERROR, "Invalid UN message from TEI management/endpoint\n");
Q921_LOG_ERROR   2887 src/isdn/Q921.c 		Q921Log(trunk, Q921_LOG_ERROR, "Invalid U frame type: %d\n", m);
Q921_LOG_ERROR   2953 src/isdn/Q921.c 			Q921Log(trunk, Q921_LOG_ERROR, "Invalid frame type: %d\n", (int)(mes[2] & 0x03));