Message Protocol

The router connects to the host using TCP/IP, based on the IP address and port number configured in the ICM database. The message formats and protocols described below are similar to those described in the ICM/VRU interface specification.

All message will be sent using network byte ordering.

  • Message Header
  • Message Types
  • Tagged fields
  • Tagged Field Codes
  • Expanded Call Variable Tags
  • InvokeID Fields
  • Failure Messages
  • Initiating Connections
  • Closing Connections
  • Heartbeats
  • Queries
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