Nice to meet you here

My name's Konstantin, I'm a senior software/VoIP engineer (CV).
I've been working as a freelancer and specialize in developing solutions in telecom sector (VoIP applications and sevices, video broadcasting, integrations, etc).
I've have my own stack and already ready-made solutions for a wide range of tasks, that allow me making prototypes/production versions rapidly and saving your the funds.
On this site you can see some of them, as well as documentations and other thing.
For ideas, job offers or product purchasing, please visit a contact page.

Products

• sttd

  High performance, multi-language, neural based Speech-to-Text system.
  Enables to arrange a complete local Text-to-Speech service on regular servers.

• ttsd

  High performance, multi-language, neural based Text-to-Speech system.
  Enables to arrange a complete local Speech-to-Tpeech service on regular servers.

• emPBX

  Soft based PBX / library.
  Designed for runing on resource-constrained devices and provide codebase for developing VoIP applications...

• wIM

  Small and portable, XMPP based instant messenger server.
  Enables to arrange private communications. Supports: chats, file sharing, bot interactions api and so on.
  Compatible with most XMPP/Jabber clients.
  

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• sIVR

  Freeswitch module that enabled to arrange user interaction through old plain IVR.
  Provides web based management interface, visual designer, voice input and menu speaking.
  

• eConf

  High performance and resource saving conference module for Freeswitch.
  Enables to arrange audio/video/text conferences over SIP/WebRTC.

• QuickJS module

  Fast and lightweight alternative for mod_v8 and mod_spidermonkey.

• Freeswitch TTS modules

  Collection of Text-to-Speech modules for integration with TTS services. (OpenAI, Google, etc)

• Freeswitch STT modules

  Collection of Speech-to-Text modules for integration with STT services. (OpenAI, Google, etc)

Research and experimental projects

• tSIP

  The software to arrange secured telephone communications over PSTN or VoIP networks.
  Experiments with scrambling and attempt to create something similar to Gretacoder, but in software...

• HATS (Home Amateur Telephony Service)

  The project goal is design software/hardware that enables to arrange private telephone/packet network using regular HAM equipments.

• HATV (Home Amateur Television)

  The goal of this projects is to get ability to arrange wideband communications on quite cheap, homemade equipment... And if possible keeps compatibilities with DVBx standards...

• HARI

  I've been always interested in spacecraft, DSN and so on, one day I was reading articles about ATA and I wandered, is it possible to hear the Voyagers through ordinary satellite equipment, such as: array of 2m parabolic dishes...

Other projects

• Inventory

  RFID based tracking / inventory system

• Renesas chips utilities

  Utilities for Renesas's SoC (R8C, RL78, ...)

• Old projects and my GitHUB