View ASR Server page field descriptions

Last Updated : Jun 05, 2026 |

Use this page to view an existing Automatic Speech Recognition (ASR) server. After you save the changes, the System Monitor web page and the MPP Manager web page on EPM display the Restart Required configuration status for MPPs that are in the Running state.

This Page contains:

General Section

Field

Description

Zone

The name of the zone within which the ASR server is configured.

Name

The unique identifier for this ASR server on the Experience Portal system.

Enable

Whether this ASR server is available for use by the Experience Portal system.

Engine Type

The type of ASR software engine the server uses.

Client ID

The client authentication credentials ID for communicating with a Nuance DLGaaS engine.

Client Secret

The client authentication credentials secret for communicating with a Nuance DLGaaS engine.

Credentials

The authentication credentials for communicating with a Google Speech or Dialogflow Engine.

Profanity Filter

The filter that indicates whether the speech recognition engine should filter out profane words or not.

Audio Chunk Size

The size of each chunk of audio data, specified in kilobytes, that is transmitted to the speech engine.

Network Address

The network address, or location, of the ASR server.

Base Port

The port number on the ASR server to which requests for ASR services are sent.

Total Number of Licensed ASR Resources

The total number of licensed ASR resources that will be used by the Experience Portal system.

Experience Portal uses this information to determine the total number of ASR resources available to the Experience Portal system.

New Connection per Session

Whether Experience Portal opens a new connection for each call session.

Languages

The languages that the ASR server can recognize.

Note:

If a speech application is configured to use more languages than are configured for any single ASR server, Experience Portal sends a No ASR Resource exception to the application. What happens then depends on the event handler that the application uses.

Listed Directory Number (LDN)

If this field appears, Avaya Services is maintaining this Experience Portal system and an Avaya Services representative has specified this LDN for this server.

MRCP Section

Field

Description

Ping Interval

When a speech application requires ASR resources, the MPP establishes a connection to the ASR server at the beginning of a session. Because there is no way to know when the connection might be used during the session, Experience Portal sends periodic "heartbeat" messages to the ASR server to make sure the connection is not terminated prematurely.

This field specifies the number of seconds the Experience Portal system waits between heartbeat messages.

Response Timeout

The number of seconds to allow for the ASR server to respond to a request for ASR resources before timing out.

Protocol

The MRCP protocol used for allocating the media processing server resources (ASR).

The options are:

  • MRCP V1

  • MRCP V2

RTSP URL

The URL of the Real-Time Streaming Protocol (RTSP) server. The RTSP server is the network remote control for the Experience Portal multimedia servers.

Note:

This field is displayed only if the Protocol field is set to MRCP V1 while adding the ASR server.

Enable Session XML

Displays when you select the MRCP V2 option in the Protocol field. Parameters specified in the session.xml file supersede vendor-specific parameters specified on the Applications webpage.

The options are:

  • Yes: Session.xml specified for each voice application is sent to the speech server. If Session.xml is not specified for the voice application, the system generates and sends a session.xml file that consists of an organization and application name.

  • No: Session.xml is not sent to the speech server for any voice application.

Transport Protocol
This field is only shown when you select the MRCP V2 protocol under the MRCP section. The transport protocol used for transporting the real-time data. The options are:

  • TLS

  • TCP

Listener Port

This field is only shown when you select the MRCP V2 protocol under the MRCP section. The default is 5060 if MRCPV2 (TCP) protocol is selected while adding the ASR server and the value changes to 5061 for MRCPV2 (TLS) protocol.

Configured SRTP List Section

This group displays any SRTP configurations defined for the connection.

Note:

This group only appears if the Transport Protocol field is set to TLS.

Field

Description

Configured SRTP List box

Displays the SRTP configurations for this connection.