The application gateway is implemented as a Java service (SERVICE JAVA CTILinkEvent • ApplicationGateway • QueryRequest) which runs on the Pega node that it is configured to run on.

The class ChannelServices-Session-AppGateway provides rules for parsing, processing and responding to a ICM application gateway query, including properties to store ICM variables and activities to process and respond to the query. In most cases, you do not need to modify rules except the activity ProcessTaggedFields, as described as follows.

The class ChannelServices-Admin-AppGateway contains rules for administering the application gateway. Access these through the Pega Call landing pages as described earlier in this chapter.