How to retrieve ISDN tag attributes like ORIGN?


Some of the ISDN tag attributes will be used in application logic.
How can the application retrieve the attribute value for ISDN tag in System Variable 542?


Typically the contents of SV542 are wiped out when a state table performs the Answer Call action. In order to get the tag attributes in SV542, make changes in the Incoming_Call state table:
  1. Copy SV542 into a Global user string system variable such as SV51 before the action Answer Call
  2. Retrieve the required ISDN tag attribute using Assign Data Tag operators on SV51