Technical data

SINAUT TD7 software package for the CPU
2.6 Blocks for optional expansion
Software
312 System Manual, 07/2009, C79000-G8976-C222-07
When there are no more SMS messages for processing in the SMS typical, the system
automatically switches back to the main mobile phone number so that when the next event
occurs that triggers an SMS, this is sent to the main mobile phone.
Note
There is no switchover to a disrupted SMS-C. In this case, the SMS typical acts as if it has
been configured for only one mobile phone number. Only one of the two mobile phone
numbers is active at any given time; the other one remains passive.
Effect of the validity period
The validity period for SMS tasks can be set using the SINAUT ST7 configuration tools (see
Subscriber Administration,
SMS Configuration tab, SMS DB Data dialog, Valid period
parameter).
The time for the validity period is started as soon as the SMS can be delivered to the SMS-
C. Within the validity period the SMS-C continues to attempt to deliver any SMS sent to it to
the mobile phone. The retry intervals, however, may be very irregular.
When the validity period expires, the SMS messages in the SMS job list of the SMS typical
are deleted and a diagnostic message is entered in the diagnostic buffer of the CPU. The
SMS messages in the SMS-C are normally also deleted at this time. How exactly the validity
period in the SMS-C is adhered to varies considerably from provider to provider.
Note
If the SMS-C can only be reached over a fixed network connection, the validity period in the
SMS-C is always approximately 48 hours. The "validity period" parameter has no effect in
this case. The configured validity period is then only applicable for the CPU and can be set
to 11 hours and 55 minutes at the maximum.
Retry mechanisms
If the SMS job is passed from the CPU to the TIM, the TIM is responsible for the send retry
when the SMS-C cannot be reached.
If the TIM is able to deliver the SMS message to the SMS-C, the SMS-C takes over
responsibility for automatic retries when the mobile phone cannot be reached immediately.
If the SMS message has been sent to the SMS-C but this is unable to deliver it to the mobile
phone, the typical (on expiry of the validity period) switches over to the backup mobile phone
(if this has been set).
The same retry mechanism is used for an SMS message requiring acknowledgement when
this SMS can be delivered to the mobile phone but no acknowledgement is returned within
the current validity period. Once again, the SMS typical also switches to the backup mobile
phone if it is available.
When a SMS cannot be delivered to the backup mobile phone, or, in the case of messages
requiring acknowledgement, no acknowledgement is received, the system switches back
and forth between the main and backup mobile phones. This continues until delivery is
completed or an acknowledgement has been received, or until the SMS typical is disabled
(ENABLE = FALSE)