A DiaOCS clause defines OCS which handles Diameter Gy requests originated by a PCEF running on a GGSN, PDN GW or other gateway.

The OCS in Radiator has been designed to be modular and uses a number modules to process the Diameter Gy messages, fetch and update information in the OCS database and store Gy session information. These modules are configured with separate clauses and referenced by their identifier from <AuthBy DiaOCS> clause.

A number of hooks are defined to customise the action when, for example, quota thresholds are reached, quota runs out or quota is used for the first time. The operators are encouraged to develop their own functions and Perl modules to handle the different events.