¶ Deepgram Plugin 1.6.0
Nov 18, 2025
Deepgram Speech Recognition (SR) Plugin 1.6.0 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The plugin is available for the following UMS versions:
1.7.0
1.8.0
- Red Hat 8
unimrcp-deepgram-sr-1.7.11-1.el8.x86_64.rpm
unimrcp-deepgram-sr-1.8.9-1.el8.x86_64.rpm- Red Hat 9
unimrcp-deepgram-sr-1.7.11-1.el9.x86_64.rpm
unimrcp-deepgram-sr-1.8.9-1.el9.x86_64.rpm- Ubuntu 22.04 LTS
unimrcp-deepgram-sr_1.7.11-jammy_amd64.deb
unimrcp-deepgram-sr_1.8.9-jammy_amd64.deb- Ubuntu 24.04 LTS
unimrcp-deepgram-sr_1.7.11-noble_amd64.deb
unimrcp-deepgram-sr_1.8.9-noble_amd64.deb
¶ Summary
This release adds support for connect timeout and graceful closure of WebSocket connection. The release also allows to specify the HTTP proxy configuration.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ 
New Features
- Made WebSocket connect timeout configurable.
- Added support for graceful closure of WebSocket connection.
- Added support for the HTTP proxy configuration.
¶ 
Fixed Problems
- None.
¶ 
Configuration Parameters
- Added new attributes 'connect-timeout', 'graceful-ws-closure', 'http-proxy' to the element 'streaming-recognition'.
¶ 
Miscellaneous
- Updated the Usage Guide to reflect the changes introduced in this release.
¶ Deepgram Plugin 1.5.0
Oct 29, 2025
Deepgram Speech Recognition (SR) Plugin 1.5.0 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The plugin is available for the following UMS versions:
1.7.0
1.8.0
- Red Hat 8
unimrcp-deepgram-sr-1.7.10-1.el8.x86_64.rpm
unimrcp-deepgram-sr-1.8.8-1.el8.x86_64.rpm- Red Hat 9
unimrcp-deepgram-sr-1.7.10-1.el9.x86_64.rpm
unimrcp-deepgram-sr-1.8.8-1.el9.x86_64.rpm- Ubuntu 22.04 LTS
unimrcp-deepgram-sr_1.7.10-jammy_amd64.deb
unimrcp-deepgram-sr_1.8.8-jammy_amd64.deb- Ubuntu 24.04 LTS
unimrcp-deepgram-sr_1.7.10-noble_amd64.deb
unimrcp-deepgram-sr_1.8.8-noble_amd64.deb
¶ Summary
This release adds support for the new Deepgram Flux (/v2/listen) API.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- Added support for the new Deepgram Flux (/v2/listen) API.
¶ Fixed Problems
- None.
¶ Configuration Parameters
- None.
¶ Miscellaneous
- Updated the Usage Guide to reflect the changes introduced in this release.
¶ Deepgram Plugin 1.4.1
Oct 17, 2025
Deepgram Speech Recognition (SR) Plugin 1.4.1 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The plugin is available for the following UMS versions:
1.7.0
1.8.0
- Red Hat 8
unimrcp-deepgram-sr-1.7.9-1.el8.x86_64.rpm
unimrcp-deepgram-sr-1.8.7-1.el8.x86_64.rpm- Red Hat 9
unimrcp-deepgram-sr-1.7.9-1.el9.x86_64.rpm
unimrcp-deepgram-sr-1.8.7-1.el9.x86_64.rpm- Ubuntu 20.04 LTS
unimrcp-deepgram-sr_1.7.9-focal_amd64.deb
unimrcp-deepgram-sr_1.8.7-focal_amd64.deb- Ubuntu 22.04 LTS
unimrcp-deepgram-sr_1.7.9-jammy_amd64.deb
unimrcp-deepgram-sr_1.8.7-jammy_amd64.deb
¶ Summary
This release fixes a regression introduced in 1.3.0 release resulting in an empty body in the RECOGNITION-COMPLETE event. The release also allows specifying multiple 'deepgram.redact' parameters similarly to 'deepgram.tag'.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- Allow to specify multiple 'deepgram.redact' parameters.
¶ Fixed Problems
- Fixed a regression introduced in 1.3.0 release resulting in an empty body in the RECOGNITION-COMPLETE event. The issue was caused by a race condition while stopping the input based on the speech_final flag with single utterance set to false.
¶ Configuration Parameters
- None.
¶ Miscellaneous
- None.
¶ Deepgram Plugin 1.4.0
Sep 15, 2025
Deepgram Speech Recognition (SR) Plugin 1.4.0 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The plugin is available for the following UMS versions:
1.7.0
1.8.0
- Red Hat 8
unimrcp-deepgram-sr-1.7.8-1.el8.x86_64.rpm
unimrcp-deepgram-sr-1.8.6-1.el8.x86_64.rpm- Red Hat 9
unimrcp-deepgram-sr-1.7.8-1.el9.x86_64.rpm
unimrcp-deepgram-sr-1.8.6-1.el9.x86_64.rpm- Ubuntu 20.04 LTS
unimrcp-deepgram-sr_1.7.8-focal_amd64.deb
unimrcp-deepgram-sr_1.8.6-focal_amd64.deb- Ubuntu 22.04 LTS
unimrcp-deepgram-sr_1.7.8-jammy_amd64.deb
unimrcp-deepgram-sr_1.8.6-jammy_amd64.deb
¶ Summary
This release adds support for initial license policy file used on start-up while the connection to the license server is being established.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- Added support for initial license policy file used on start-up while the connection to the license server is being established.
¶ Fixed Problems
- None.
¶ Configuration Parameters
- Added a new attribute 'initial-policy-file' to the element 'license-server'.
¶ Miscellaneous
- Updated the Usage Guide to reflect the changes introduced in this release.
¶ Deepgram Plugin 1.3.1
Aug 25, 2025
Deepgram Speech Recognition (SR) Plugin 1.3.1 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The plugin is available for the following UMS versions:
1.7.0
1.8.0
- Red Hat 7
unimrcp-deepgram-sr-1.7.7-1.el7.x86_64.rpm
unimrcp-deepgram-sr-1.8.5-1.el7.x86_64.rpm- Red Hat 8
unimrcp-deepgram-sr-1.7.7-1.el8.x86_64.rpm
unimrcp-deepgram-sr-1.8.5-1.el8.x86_64.rpm- Red Hat 9
unimrcp-deepgram-sr-1.7.7-1.el9.x86_64.rpm
unimrcp-deepgram-sr-1.8.5-1.el9.x86_64.rpm- Ubuntu 20.04 LTS
unimrcp-deepgram-sr_1.7.7-focal_amd64.deb
unimrcp-deepgram-sr_1.8.5-focal_amd64.deb- Ubuntu 22.04 LTS
unimrcp-deepgram-sr_1.7.7-jammy_amd64.deb
unimrcp-deepgram-sr_1.8.5-jammy_amd64.deb
¶ Summary
This is a patch release which fixes a regression introduced in the previous release. This release also ensures query string parameters are URL-encoded.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- None.
¶ Fixed Problems
- Make sure the 'language' parameter is not specified twice in the Deepgram URL. Only the 'tag' parameter can be specified multiple times. This was a regression introduced in the previous release.
- Make sure all the query string parameters are properly URL-encoded.
¶ Configuration Parameters
- None.
¶ Miscellaneous
- None.
¶ Deepgram Plugin 1.3.0
Aug 18, 2025
Deepgram Speech Recognition (SR) Plugin 1.3.0 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The plugin is available for the following UMS versions:
1.7.0
1.8.0
- Red Hat 7
unimrcp-deepgram-sr-1.7.6-1.el7.x86_64.rpm
unimrcp-deepgram-sr-1.8.4-1.el7.x86_64.rpm- Red Hat 8
unimrcp-deepgram-sr-1.7.6-1.el8.x86_64.rpm
unimrcp-deepgram-sr-1.8.4-1.el8.x86_64.rpm- Red Hat 9
unimrcp-deepgram-sr-1.7.6-1.el9.x86_64.rpm
unimrcp-deepgram-sr-1.8.4-1.el9.x86_64.rpm- Ubuntu 20.04 LTS
unimrcp-deepgram-sr_1.7.6-focal_amd64.deb
unimrcp-deepgram-sr_1.8.4-focal_amd64.deb- Ubuntu 22.04 LTS
unimrcp-deepgram-sr_1.7.6-jammy_amd64.deb
unimrcp-deepgram-sr_1.8.4-jammy_amd64.deb
¶ Summary
This release allows to specify multiple 'deepgram.tag' parameters. The release also provides a few fixes and improvements.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- Allow to specify multiple 'deepgram.tag' parameters.
- When 'vad_events' is set to 'true', derive START-OF-INPUT from 'SpeechStarted' event.
- Use 'speech_final' flag as an indication of input completion when 'single-utterance' is set to 'false'.
¶ Fixed Problems
- Skip processing of new messages received from Deepgram when connection is closing.
- Make sure the keep-alive timer is properly stopped when start-of-input is set to internal. This issue could possibly cause a segfault.
¶ Configuration Parameters
- None.
¶ Miscellaneous
- None.
¶ Deepgram Plugin 1.2.1
Mar 26, 2025
Deepgram Speech Recognition (SR) Plugin 1.2.1 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The plugin is available for the following UMS versions:
1.7.0
1.8.0
- Red Hat 7
unimrcp-deepgram-sr-1.7.5-1.el7.x86_64.rpm
unimrcp-deepgram-sr-1.8.3-1.el7.x86_64.rpm- Red Hat 8
unimrcp-deepgram-sr-1.7.5-1.el8.x86_64.rpm
unimrcp-deepgram-sr-1.8.3-1.el8.x86_64.rpm- Red Hat 9
unimrcp-deepgram-sr-1.7.5-1.el9.x86_64.rpm
unimrcp-deepgram-sr-1.8.3-1.el9.x86_64.rpm- Ubuntu 20.04 LTS
unimrcp-deepgram-sr_1.7.5-focal_amd64.deb
unimrcp-deepgram-sr_1.8.3-focal_amd64.deb- Ubuntu 22.04 LTS
unimrcp-deepgram-sr_1.7.5-jammy_amd64.deb
unimrcp-deepgram-sr_1.8.3-jammy_amd64.deb
¶ Summary
This release fixes the format of KeepAlive messages.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- None.
¶ Fixed Problems
- Send KeepAlive messages in the WebSocket text format instead of binary.
¶ Configuration Parameters
- None.
¶ Miscellaneous
- None.
¶ Deepgram Plugin 1.2.0
May 30, 2024
Deepgram Speech Recognition (SR) Plugin 1.2.0 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The plugin is available for the following UMS versions:
1.7.0
1.8.0
- Red Hat / CentOS 7
unimrcp-deepgram-sr-1.7.4-1.el7.x86_64.rpm
unimrcp-deepgram-sr-1.8.2-1.el7.x86_64.rpm- Red Hat / CentOS 8
unimrcp-deepgram-sr-1.7.4-1.el8.x86_64.rpm
unimrcp-deepgram-sr-1.8.2-1.el8.x86_64.rpm- Ubuntu 20.04 LTS
unimrcp-deepgram-sr_1.7.4-focal_amd64.deb
unimrcp-deepgram-sr_1.8.2-focal_amd64.deb- Ubuntu 22.04 LTS
unimrcp-deepgram-sr_1.7.4-jammy_amd64.deb
unimrcp-deepgram-sr_1.8.2-jammy_amd64.deb
¶ Summary
This release adds support for KeepAlive messages and fixes two problems.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- Added support for KeepAlive messages.
¶ Fixed Problems
- Fixed a possible binary incompatibility problem with other WebSocket-based plugins being loaded into the same UniMRCP Server instance.
- Make sure the no-input timer is stopped when a final result is received without any prior interim results.
¶ Configuration Parameters
- Added a new attribute 'keep-alive-interval' to the element 'streaming-recognition'.
¶ Miscellaneous
- Updated the Usage Guide to reflect the changes introduced in this release.
¶ Deepgram Plugin 1.1.0
Dec 30, 2022
Deepgram Speech Recognition (SR) Plugin 1.1.0 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The plugin is available for the following UMS versions:
1.7.0
1.8.0
- Red Hat / CentOS 7
unimrcp-deepgram-sr-1.7.3-1.el7.x86_64.rpm
unimrcp-deepgram-sr-1.8.1-1.el7.x86_64.rpm- Red Hat / CentOS 8
unimrcp-deepgram-sr-1.7.3-1.el8.x86_64.rpm
unimrcp-deepgram-sr-1.8.1-1.el8.x86_64.rpm- Ubuntu 18.04 LTS
unimrcp-deepgram-sr_1.7.3-bionic_amd64.deb
unimrcp-deepgram-sr_1.8.1-bionic_amd64.deb- Ubuntu 20.04 LTS
unimrcp-deepgram-sr_1.7.3-focal_amd64.deb
unimrcp-deepgram-sr_1.8.1-focal_amd64.deb
¶ Summary
The licensing toolkit has been extended to support flexible license distribution allowing for a more efficient use of licenses. The change applies to the use of floating licenses via a license server only. There are no functional changes in the use of node-bound licenses.
The licenses stored on a shared license store are dynamically re-distributed at runtime based on the actual usage. There is no need to pre-allocate a fixed number of licenses on initial loading of UniMRCP Server instances.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- Added support for flexible license distribution.
¶ Fixed Problems
- None.
¶ Configuration Parameters
- None.
¶ Miscellaneous
- None.
¶ Deepgram Plugin 1.0.2
Oct 18, 2022
Deepgram Speech Recognition (SR) Plugin 1.0.2 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
UniMRCP Server 1.7.0
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The binaries are currently available for the following Linux distributions:
Red Hat / CentOS 7 (unimrcp-deepgram-sr-1.7.2-1.el7.x86_64.rpm)
Red Hat / CentOS 8 (unimrcp-deepgram-sr-1.7.2-1.el8.x86_64.rpm)
Ubuntu 18.04 LTS (unimrcp-deepgram-sr_1.7.2-bionic_amd64.deb)
Ubuntu 20.04 LTS (unimrcp-deepgram-sr_1.7.2-focal_amd64.deb)
¶ Summary
This is a patch release providing an updated default configuration file.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- None.
¶ Fixed Problems
- None.
¶ Configuration Parameters
- Updated the default configuration file to include a new Deepgram parameter 'tier'.
¶ Miscellaneous
- None.
¶ Deepgram Plugin 1.0.1
Jun 1, 2022
Deepgram Speech Recognition (SR) Plugin 1.0.1 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
UniMRCP Server 1.7.0
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The binaries are currently available for the following Linux distributions:
Red Hat / CentOS 7 (unimrcp-deepgram-sr-1.7.1-1.el7.x86_64.rpm)
Red Hat / CentOS 8 (unimrcp-deepgram-sr-1.7.1-1.el8.x86_64.rpm)
Ubuntu 18.04 LTS (unimrcp-deepgram-sr_1.7.1-bionic_amd64.deb)
Ubuntu 20.04 LTS (unimrcp-deepgram-sr_1.7.1-focal_amd64.deb)
¶ Summary
This is a patch release providing two fixes.
¶ Changes
The detailed list of changes introduced in this release follows.
¶ New Features
- None.
¶ Fixed Problems
- Fixed support for the 'alternatives' attribute specified in the 'deepgram-settings'.
- Fixed a possible segfault occurred when two file entries (waveforms and/or RDRs) have the same creation time, which is a very rare occasion not involved in the regular operation.
¶ Configuration Parameters
- None.
¶ Miscellaneous
- None.
¶ Deepgram SR Plugin 1.0.0
May 16, 2022
Deepgram Speech Recognition (SR) Plugin 1.0.0 to the UniMRCP Server (UMS) has been released.
The plugin is based on the following components:
UniMRCP Server 1.7.0
Deepgram WebSocket API
Libevent 2.1.9
Rapidjson 1.1.0
The binaries are currently available for the following Linux distributions:
Red Hat / CentOS 7 (unimrcp-deepgram-sr-1.7.0-1.el7.x86_64.rpm)
Red Hat / CentOS 8 (unimrcp-deepgram-sr-1.7.0-1.el8.x86_64.rpm)
Ubuntu 18.04 LTS (unimrcp-deepgram-sr_1.7.0-bionic_amd64.deb)
Ubuntu 20.04 LTS (unimrcp-deepgram-sr_1.7.0-focal_amd64.deb)
¶ Summary
The plugin allows IVR platforms to utilize the Deepgram Speech-to-Text API via MRCP.