MRCP v2 Server Documentation How To Start The Service The service can be started from the Windows Services applet - after installation, the service's Startup Type is set to Manual. The service shows up in the Services applet under the name ATTMRCP. Upon startup of the MRCP service, Windows will attempt to start the AT&T Natural Voices TTS service, as well. The AT&T Natural Voices TTS service must be installed and working before you can successfuly start the MRCP service. By default, the MRCP service listens for incoming connections on UDP port 5060. You will need to open this port on the Windows firewall to allow clients to establish connections to the server. Configuration Certain aspects of the MRCP service's configuration can be changed by editing a text configuration file that's installed in the service's program directory (typically "C:\Program Files\ATT NaturalVoices MRCP Service"). The filename is ATTMRCPServerConfig.txt, and it can be edited with any text editor. Configuration options have the following format: = Where is a case sensitive, alphanumeric identifier which may include the '_' character, and is either a numeric or an alphanumeric value. The configuration options which can be set are: Log_Level - The service creates a log file when it runs, and writes certain diagnostic information in that file. Supported log levels are: 0 - No logging. 1 - Errors only. 2 - Errors and warnings. 3 - Debug and tracing. The default value is 1. The use of Log_Level = 3 is not recommended for production deployments. SIP_Port - This is the UDP port the server is listening on for initial connections from clients. The default value is 5060. RTP_Default_Port - This is the default RTP port the server proposes that the client use for receiving RTP traffic. Defaults to 10000. Save_TTS_Audio and Save_RTP_Audio - those are only useful for diagnostic purposes. Leave them commented out.