SRI4SM-Router

The ‘SRI4SM – Router’ function,
implemented by
Aitia International Inc.

Table of contents

• How does it work?

• Software components

Basic operation of the SRI4SM-Router service

The network provides that SRI4SM-Invocation messages emitted by the SMSC are routed towards the SRI4SM-Router. Messages are being analyzed and the SCCP/CadPA fields are modified based on the rules. The SCCP policy within the MST ensures that only international SRI4SM-Invocation messages are routed to the SRI4SM-Router.

Functions of the SRI4SM-Router

• The CCP/CadPA field is modified based on the MAP/MSISDN value and the preset rules. If MAP/MSISDN value or its prefix is listed in the configuration then basically:
  • a prefix is added to the SCCP/CadPA/GT; or
  • the original SCCP/CadPA/GT is changed to a fix HLR address.
• Possible rules are:
  • ChangeTT – a new TranslationType value will be set
  • PrefixGT – a prefix will be added to the original SCCP/CadPA/GT
  • ChangeGT – a new SCCP/CadPA/GT will be set
• Combination of rules can be specified.
• MSISDN values and prefixes (i.e., ranges) can be specified with the rule to be applied.
• Exceptions (subranges or exact MSISDNs) from a range is handled as a best match search algorithm is implemented.
• When the MAP/MSISDN and the SCCP/CadPA/GT is not the same then the message is sent back untouched.
• The length of the SCCP/CadPA/GT value can be limited to an adjustable length. When the new GT would be longer than the limit then it should be truncated.
• Parameters of incoming messages and the applied changes are stored in a human-readable CDR file.