diff --git a/tests/v110/ta_test.err b/tests/v110/ta_test.err
new file mode 100644
index 0000000..347f8f6
--- /dev/null
+++ b/tests/v110/ta_test.err
@@ -0,0 +1,284 @@
+
+==== Running test_idle_ready()
+DLGLOBAL DEBUG V110-TA(test_idle_ready){IDLE_READY}: Allocated
+DLGLOBAL DEBUG V110-TA(test_idle_ready){IDLE_READY}: State change to IDLE_READY (no timeout)
+v110_ta_test_status_update_cb(status=0x00000000)
+Initial status: 0x00000000
+circuit 106/CTS (Clear to Send) is OFF (expected to be OFF)
+circuit 107/DSR (Data Set Ready) is OFF (expected to be OFF)
+circuit 109/DCD (Data Carrier Detect) is OFF (expected to be OFF)
+osmo_v110_ta_frame_in(): all bits set to binary '1'
+    D-bits: 111111111111111111111111111111111111111111111111
+    E-bits: 1111111
+    S-bits: 111111111
+    X-bits: 11
+DLGLOBAL DEBUG V110-TA(test_idle_ready){IDLE_READY}: Received Event RX_FRAME_IND
+v110_ta_test_rx_cb(buf_size=48): 111111111111111111111111111111111111111111111111
+osmo_v110_ta_frame_in() returns 0
+osmo_v110_ta_frame_out(): expecting all bits set to binary '1'
+DLGLOBAL DEBUG V110-TA(test_idle_ready){IDLE_READY}: Received Event TX_FRAME_RTS
+osmo_v110_ta_frame_out() returns 0
+    D-bits: 111111111111111111111111111111111111111111111111
+    E-bits: 1111111
+    S-bits: 111111111
+    X-bits: 11
+setting circuit 108/DTR (Data Terminal Ready) ON
+DLGLOBAL DEBUG V110-TA(test_idle_ready){IDLE_READY}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_idle_ready){IDLE_READY}: State change to CONNECT_TA_TO_LINE (T1, 10s)
+osmo_v110_ta_set_circuit() returns 0
+setting circuit 108/DTR (Data Terminal Ready) OFF
+DLGLOBAL DEBUG V110-TA(test_idle_ready){CONNECT_TA_TO_LINE}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_idle_ready){CONNECT_TA_TO_LINE}: State change to IDLE_READY (no timeout)
+v110_ta_test_status_update_cb(status=0x00000000)
+osmo_v110_ta_set_circuit() returns 0
+setting circuit 108/DTR (Data Terminal Ready) ON
+DLGLOBAL DEBUG V110-TA(test_idle_ready){IDLE_READY}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_idle_ready){IDLE_READY}: State change to CONNECT_TA_TO_LINE (T1, 10s)
+osmo_v110_ta_set_circuit() returns 0
+DLGLOBAL DEBUG V110-TA(test_idle_ready){CONNECT_TA_TO_LINE}: Deallocated
+
+==== Running test_conn_ta_line()
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){IDLE_READY}: Allocated
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){IDLE_READY}: State change to IDLE_READY (no timeout)
+v110_ta_test_status_update_cb(status=0x00000000)
+setting circuit 108/DTR (Data Terminal Ready) ON
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){IDLE_READY}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){IDLE_READY}: State change to CONNECT_TA_TO_LINE (T1, 10s)
+osmo_v110_ta_set_circuit() returns 0
+osmo_v110_ta_frame_out(): S-/X-bits are expected to be 1 (OFF)
+osmo_v110_ta_frame_out(): D-/E-bits are all expected to be 1
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){CONNECT_TA_TO_LINE}: Received Event TX_FRAME_RTS
+osmo_v110_ta_frame_out() returns 0
+    D-bits: 111111111111111111111111111111111111111111111111
+    E-bits: 1111111
+    S-bits: 111111111
+    X-bits: 11
+osmo_v110_ta_sync_ind(): the lower layer indicates sync event
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){CONNECT_TA_TO_LINE}: Received Event SYNC_IND
+osmo_v110_ta_frame_out(): S-/X-bits are expected to be 0 (ON)
+osmo_v110_ta_frame_out(): D-/E-bits are all expected to be 1
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){CONNECT_TA_TO_LINE}: Received Event TX_FRAME_RTS
+osmo_v110_ta_frame_out() returns 0
+    D-bits: 111111111111111111111111111111111111111111111111
+    E-bits: 1111111
+    S-bits: 000000000
+    X-bits: 00
+osmo_v110_ta_frame_in(): S-/X-bits are OFF, expect no state change
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 111111111
+    X-bits: 11
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){CONNECT_TA_TO_LINE}: Received Event RX_FRAME_IND
+v110_ta_test_rx_cb(buf_size=48): 111111111111111111111111111111111111111111111111
+osmo_v110_ta_frame_in() returns 0
+osmo_v110_ta_frame_in(): S-/X-bits are ON, expect state change
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 000000000
+    X-bits: 00
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){CONNECT_TA_TO_LINE}: Received Event RX_FRAME_IND
+v110_ta_test_status_update_cb(status=0x0000001e)
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){CONNECT_TA_TO_LINE}: State change to DATA_TRANSFER (no timeout)
+v110_ta_test_status_update_cb(status=0x0000001e)
+v110_ta_test_rx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_in() returns 0
+DLGLOBAL DEBUG V110-TA(test_conn_ta_line){DATA_TRANSFER}: Deallocated
+
+==== Running test_data_transfer()
+DLGLOBAL DEBUG V110-TA(test_data_transfer){IDLE_READY}: Allocated
+DLGLOBAL DEBUG V110-TA(test_data_transfer){IDLE_READY}: State change to IDLE_READY (no timeout)
+v110_ta_test_status_update_cb(status=0x00000000)
+setting circuit 108/DTR (Data Terminal Ready) ON
+DLGLOBAL DEBUG V110-TA(test_data_transfer){IDLE_READY}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_data_transfer){IDLE_READY}: State change to CONNECT_TA_TO_LINE (T1, 10s)
+osmo_v110_ta_set_circuit() returns 0
+osmo_v110_ta_sync_ind(): the lower layer indicates sync event
+DLGLOBAL DEBUG V110-TA(test_data_transfer){CONNECT_TA_TO_LINE}: Received Event SYNC_IND
+osmo_v110_ta_frame_in(): S-/X-bits are ON, expect state change
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 000000000
+    X-bits: 00
+DLGLOBAL DEBUG V110-TA(test_data_transfer){CONNECT_TA_TO_LINE}: Received Event RX_FRAME_IND
+v110_ta_test_status_update_cb(status=0x0000001e)
+DLGLOBAL DEBUG V110-TA(test_data_transfer){CONNECT_TA_TO_LINE}: State change to DATA_TRANSFER (no timeout)
+v110_ta_test_status_update_cb(status=0x0000001e)
+v110_ta_test_rx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_in() returns 0
+circuit 106/CTS (Clear to Send) is ON (expected to be ON)
+circuit 107/DSR (Data Set Ready) is ON (expected to be ON)
+circuit 109/DCD (Data Carrier Detect) is ON (expected to be ON)
+osmo_v110_ta_frame_out(): S-/X-bits are expected to be 0 (ON)
+osmo_v110_ta_frame_out(): E1..E3-bits are expected to be 011 (9600)
+osmo_v110_ta_frame_out(): we also expect the .tx_cb() to be called
+DLGLOBAL DEBUG V110-TA(test_data_transfer){DATA_TRANSFER}: Received Event TX_FRAME_RTS
+v110_ta_test_tx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_out() returns 0
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 000000000
+    X-bits: 00
+osmo_v110_ta_frame_in(): feed that frame that we pulled out back into the TA
+DLGLOBAL DEBUG V110-TA(test_data_transfer){DATA_TRANSFER}: Received Event RX_FRAME_IND
+v110_ta_test_rx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_in() returns 0
+DLGLOBAL DEBUG V110-TA(test_data_transfer){DATA_TRANSFER}: Deallocated
+
+==== Running test_data_transfer_disc_local()
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){IDLE_READY}: Allocated
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){IDLE_READY}: State change to IDLE_READY (no timeout)
+v110_ta_test_status_update_cb(status=0x00000000)
+setting circuit 108/DTR (Data Terminal Ready) ON
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){IDLE_READY}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){IDLE_READY}: State change to CONNECT_TA_TO_LINE (T1, 10s)
+osmo_v110_ta_set_circuit() returns 0
+osmo_v110_ta_sync_ind(): the lower layer indicates sync event
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){CONNECT_TA_TO_LINE}: Received Event SYNC_IND
+osmo_v110_ta_frame_in(): S-/X-bits are ON, expect state change
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 000000000
+    X-bits: 00
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){CONNECT_TA_TO_LINE}: Received Event RX_FRAME_IND
+v110_ta_test_status_update_cb(status=0x0000001e)
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){CONNECT_TA_TO_LINE}: State change to DATA_TRANSFER (no timeout)
+v110_ta_test_status_update_cb(status=0x0000001e)
+v110_ta_test_rx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_in() returns 0
+local TE initiates disconnection
+setting circuit 108/DTR (Data Terminal Ready) OFF
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){DATA_TRANSFER}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){DATA_TRANSFER}: State change to DISCONNECTING (T2, 5s)
+v110_ta_test_status_update_cb(status=0x00000014)
+osmo_v110_ta_set_circuit() returns 0
+osmo_v110_ta_frame_out(): S-bits are expected to be 1 (OFF)
+osmo_v110_ta_frame_out(): X-bits are expected to be 0 (ON)
+osmo_v110_ta_frame_out(): D-bits are all expected to be 0
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){DISCONNECTING}: Received Event TX_FRAME_RTS
+osmo_v110_ta_frame_out() returns 0
+    D-bits: 000000000000000000000000000000000000000000000000
+    E-bits: 1111111
+    S-bits: 111111111
+    X-bits: 00
+circuit 106/CTS (Clear to Send) is OFF (expected to be OFF)
+circuit 107/DSR (Data Set Ready) is ON (expected to be ON)
+circuit 109/DCD (Data Carrier Detect) is ON (expected to be ON)
+osmo_v110_ta_frame_in(): S-/X-bits are ON, expect no state change
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 000000000
+    X-bits: 00
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){DISCONNECTING}: Received Event RX_FRAME_IND
+v110_ta_test_rx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_in() returns 0
+osmo_v110_ta_frame_in(): S-bits are OFF, expect state change
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 111111111
+    X-bits: 00
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){DISCONNECTING}: Received Event RX_FRAME_IND
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){DISCONNECTING}: State change to IDLE_READY (no timeout)
+v110_ta_test_status_update_cb(status=0x00000000)
+v110_ta_test_rx_cb(buf_size=48): 111111111111111111111111111111111111111111111111
+osmo_v110_ta_frame_in() returns 0
+circuit 106/CTS (Clear to Send) is OFF (expected to be OFF)
+circuit 107/DSR (Data Set Ready) is OFF (expected to be OFF)
+circuit 109/DCD (Data Carrier Detect) is OFF (expected to be OFF)
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_local){IDLE_READY}: Deallocated
+
+==== Running test_data_transfer_disc_remote()
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){IDLE_READY}: Allocated
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){IDLE_READY}: State change to IDLE_READY (no timeout)
+v110_ta_test_status_update_cb(status=0x00000000)
+setting circuit 108/DTR (Data Terminal Ready) ON
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){IDLE_READY}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){IDLE_READY}: State change to CONNECT_TA_TO_LINE (T1, 10s)
+osmo_v110_ta_set_circuit() returns 0
+osmo_v110_ta_sync_ind(): the lower layer indicates sync event
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){CONNECT_TA_TO_LINE}: Received Event SYNC_IND
+osmo_v110_ta_frame_in(): S-/X-bits are ON, expect state change
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 000000000
+    X-bits: 00
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){CONNECT_TA_TO_LINE}: Received Event RX_FRAME_IND
+v110_ta_test_status_update_cb(status=0x0000001e)
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){CONNECT_TA_TO_LINE}: State change to DATA_TRANSFER (no timeout)
+v110_ta_test_status_update_cb(status=0x0000001e)
+v110_ta_test_rx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_in() returns 0
+remote TE initiates disconnection
+osmo_v110_ta_frame_in(): S-bits are OFF, X-bits are ON
+osmo_v110_ta_frame_in(): D-bits are all set to 0
+    D-bits: 000000000000000000000000000000000000000000000000
+    E-bits: 0111111
+    S-bits: 111111111
+    X-bits: 00
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){DATA_TRANSFER}: Received Event RX_FRAME_IND
+v110_ta_test_status_update_cb(status=0x0000000a)
+osmo_v110_ta_frame_in() returns 0
+circuit 107/DSR (Data Set Ready) is OFF (expected to be OFF)
+circuit 109/DCD (Data Carrier Detect) is OFF (expected to be OFF)
+local TE confirms disconnection
+setting circuit 108/DTR (Data Terminal Ready) OFF
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){DATA_TRANSFER}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){DATA_TRANSFER}: State change to DISCONNECTING (T2, 5s)
+v110_ta_test_status_update_cb(status=0x00000000)
+osmo_v110_ta_set_circuit() returns 0
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){DISCONNECTING}: Received Event DESYNC_IND
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){DISCONNECTING}: State change to IDLE_READY (no timeout)
+v110_ta_test_status_update_cb(status=0x00000000)
+circuit 106/CTS (Clear to Send) is OFF (expected to be OFF)
+circuit 107/DSR (Data Set Ready) is OFF (expected to be OFF)
+circuit 109/DCD (Data Carrier Detect) is OFF (expected to be OFF)
+DLGLOBAL DEBUG V110-TA(test_data_transfer_disc_remote){IDLE_READY}: Deallocated
+
+==== Running test_syncing()
+DLGLOBAL DEBUG V110-TA(test_syncing){IDLE_READY}: Allocated
+DLGLOBAL DEBUG V110-TA(test_syncing){IDLE_READY}: State change to IDLE_READY (no timeout)
+v110_ta_test_status_update_cb(status=0x00000000)
+setting circuit 108/DTR (Data Terminal Ready) ON
+DLGLOBAL DEBUG V110-TA(test_syncing){IDLE_READY}: Received Event V24_STATUS_CHG
+DLGLOBAL DEBUG V110-TA(test_syncing){IDLE_READY}: State change to CONNECT_TA_TO_LINE (T1, 10s)
+osmo_v110_ta_set_circuit() returns 0
+osmo_v110_ta_sync_ind(): the lower layer indicates sync event
+DLGLOBAL DEBUG V110-TA(test_syncing){CONNECT_TA_TO_LINE}: Received Event SYNC_IND
+osmo_v110_ta_frame_in(): S-/X-bits are ON, expect state change
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 000000000
+    X-bits: 00
+DLGLOBAL DEBUG V110-TA(test_syncing){CONNECT_TA_TO_LINE}: Received Event RX_FRAME_IND
+v110_ta_test_status_update_cb(status=0x0000001e)
+DLGLOBAL DEBUG V110-TA(test_syncing){CONNECT_TA_TO_LINE}: State change to DATA_TRANSFER (no timeout)
+v110_ta_test_status_update_cb(status=0x0000001e)
+v110_ta_test_rx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_in() returns 0
+osmo_v110_ta_sync_ind(): the lower layer indicates out-of-sync event
+DLGLOBAL DEBUG V110-TA(test_syncing){DATA_TRANSFER}: Received Event DESYNC_IND
+DLGLOBAL DEBUG V110-TA(test_syncing){DATA_TRANSFER}: State change to RESYNCING (X1, 3s)
+osmo_v110_ta_frame_out(): S-bits are expected to be 0 (ON)
+osmo_v110_ta_frame_out(): X-bits are expected to be 1 (OFF)
+osmo_v110_ta_frame_out(): D-bits are to be set by .tx_cb()
+DLGLOBAL DEBUG V110-TA(test_syncing){RESYNCING}: Received Event TX_FRAME_RTS
+v110_ta_test_tx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_out() returns 0
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 000000000
+    X-bits: 11
+osmo_v110_ta_sync_ind(): the lower layer indicates sync event
+DLGLOBAL DEBUG V110-TA(test_syncing){RESYNCING}: Received Event SYNC_IND
+DLGLOBAL DEBUG V110-TA(test_syncing){RESYNCING}: State change to DATA_TRANSFER (no timeout)
+v110_ta_test_status_update_cb(status=0x0000001e)
+osmo_v110_ta_frame_out(): S-bits are expected to be 0 (ON)
+osmo_v110_ta_frame_out(): X-bits are expected to be 0 (ON)
+osmo_v110_ta_frame_out(): D-bits are to be set by .tx_cb()
+DLGLOBAL DEBUG V110-TA(test_syncing){DATA_TRANSFER}: Received Event TX_FRAME_RTS
+v110_ta_test_tx_cb(buf_size=48): 010101010101010101010101010101010101010101010101
+osmo_v110_ta_frame_out() returns 0
+    D-bits: 010101010101010101010101010101010101010101010101
+    E-bits: 0111111
+    S-bits: 000000000
+    X-bits: 00
+DLGLOBAL DEBUG V110-TA(test_syncing){DATA_TRANSFER}: Deallocated