Welltech Dialogic SS7 Protocols ISUP - Manual (Page 200)

Appendix F: Timer Services
200
F.1 Timer Expiry
Periodic timer tick message issued by the timer module.
Message Header
structure MSG
type TM_EXP (0xc002)
id index of timer in table
src Timer module ID
dst Destination module ID
rsp_req 0
hclass 0x00
status 0x00
err_info 0x00
len 4
Parameter Area
parameters offset 0, size 4: Reserved Must be set to zero.