semaphore TBOX LT2-530 Series, User Manual, Page: 123 / 197

Version : 1.09 123
13.2. Acknowledgment of an alarm by sending data to the RTU
Two types of recipient may require an acknowledgment by SMS:

Pager/SMS: sending a message through a SMS-C (standard way)

E-mail: sending a message through a SMTP server, which can be forwarded as SMS through
a dedicated service
Alarm conditions
associated to a recipient of
type “Pager/SMS” or “E-
mail” provide the options:
SMS acknowledge and
POP3 acknowledge (with
e-mail recipient only)
Acknowledgment is carried out in 2 steps. Example with sending of a SMS:
1. Sending of the message by
TB
OX
LT2
(to the SMS-C or to the e-mail provider) will be first
performed. Retries and time-out defined in the recipient will be used to determine the success or
failure of sending.
2. Then a second time-out, defined in the advanced ‘Alarms’ properties, will check whether incoming
SMS required to acknowledge the alarm, arrives on time.