The following is a template for the SIGMA script used for the connection between the ASBCE and the IP Office. Use this template to create a text file on your PC.

within session "INVITE"
{
act on request where %DIRECTION="INBOUND" and %ENTRY_POINT="AFTER_NETWORK"
  {
    %ContactValue = %HEADERS["Contact"][1];
    %HEADERS["Record-Route"][1] = %ContactValue;
   }
}