# DTM_TRUNK_STATE

DTM_TRUNK_STATE is a 4-byte data structure that describes the current alarm and synchronization state of a trunk. This structure is included in DTM_TRUNK_STATUS and in the status event. The structure is defined as follows:

typedef struct
{
BYTE alarms; /* 0 = no alarm
* 1 = Far end loss of frame ("yellow")
* 2 = Alarm Indication Signal ("blue")
* 4 = Loss of frame (T1 "red") E1: Loss of
* sync, excessive BER
* 8 = (E1) Far end loss of MF sync
* 0x10 = (E1) TS16AIS
*/
BYTE sync; /* 0 = in sync
* 1 = loss of signal
* 2 = no (frame) sync
* 4 = no multiframe sync
* 8 = No CRC Multiframe Sync
*/
BYTE alarmsent; /* 0 = no alarms
* 1 = sending loss of frame
* 2 = sending AIS
* 4 = sending loss of multiframe (E1 CAS)
* 8 = sending TS16AIS (E1)
*/
BYTE spare;
} DTM_TRUNK_STATE ;