DigiPBX by MD3 Communication Service, Inc. ↗
Product Lines

Software products for PBX-centered work.

DigiPBX product work focuses on the layers around a business phone system: endpoints, secure access, and AI-assisted call workflows.

Product surfaces
MD3 Softphone Windows multi-line call handling screenshot
MD3 Softphone
AI Voice Agent live-call demo interface screenshot
AI Voice live-call demo
RealtyCase Manager case workflow screenshot
RealtyCase case workflow
WG Mini UI WireGuard peer management screenshot
WG Mini UI
Product Architecture

Three product lines around private PBX-aware work.

Endpoint software, secure access, and AI voice workflows can stand alone or become part of a custom business system.

PBX Core Asterisk / SIP
Android release path, Windows enterprise customization MD3 Softphone Internal testing Local-first live-call intake and handoff AI Voice Agent Live-call demo foundation WireGuard access management for private systems WG Mini UI Controlled deployment direction
01
Internal testing MD3 internal product work
Android release path, Windows enterprise customization

MD3 Softphone

A SIP softphone in internal testing for business call handling, multi-line operation, transfer workflows, and future CRM-aware calling.

  • Android app planned for Google Play after development and testing
  • Windows .NET 8 / WPF softphone for customer-specific front desk and call center use
  • SIP registration and inbound/outbound calling workflows
  • Configurable multi-line support with contacts, hold, transfer, and merge workflows
  • Optional drag-based call control for blind transfer and line-to-line merge
  • G.711 and Opus media path with RTP handling
  • Designed as one possible endpoint in a future PBX-aware workflow
  • macOS and iOS planned as later platform targets if the product direction continues to grow
View softphone direction
Development screenshots
MD3 Softphone Windows three-line active call surface screenshot
Windows multi-line call surface
MD3 Softphone Android transfer workflow screenshot
Android transfer flow
02
Live-call demo foundation MD3 internal AI voice work
Local-first live-call intake and handoff

AI Voice Agent

A Windows-first, local-first AI voice receptionist foundation for live Asterisk calls, bilingual intake, structured lead capture, short replies, and human transfer.

  • Whisper.net local transcription with adaptive Chinese, English, and mixed-language recognition
  • Live Asterisk 22 ARI, Stasis, externalMedia, and call-transcription path
  • Rule-based FAQ matching with company-profile replies and optional local LLM refinement
  • Structured capture for name, company, phone, email, and callback reason
  • Local TTS greeting and reply playback experiments for phone calls
  • Human-transfer intent detection when the caller should reach a person
  • Saved session packages with transcript, conversation turns, captured fields, and timing data
View AI voice direction
Live-call demo surface
AI Voice Agent local-first live-call reception demo screenshot
Local-first call intake, transfer readiness, and session review
03
Controlled deployment direction MD3 secure access tooling
WireGuard access management for private systems

WG Mini UI

A lightweight WireGuard management surface for private access to PBX consoles, softphone environments, internal dashboards, and workflow systems.

  • Create, review, enable, disable, and remove WireGuard peers from a focused browser interface
  • Generate client configuration files and mobile QR codes for managed onboarding
  • Support client-owned public key workflows for customers with stronger key-control preferences
  • Track owner, device, department, access profile, expiry, handshake, and lifecycle state
  • Review operations posture, audit events, backups, and security checks
  • Useful for remote access to private PBX, SIP, softphone, RealtyCase-style workflow, and internal reporting systems
View WG Mini UI direction
WireGuard access management
WG Mini UI peers overview and add peer panel screenshot
Peers + guided onboarding
WG Mini UI operations insights dashboard screenshot
Operations posture
WG Mini UI peer details lifecycle screenshot
Peer lifecycle
Softphone Call Control

Multi-line calling should make transfer and merge feel like moving work, not hunting through menus.

The Windows softphone direction includes optional drag-based actions: move a contact card onto an active call for blind transfer, or move one call line onto another to merge the conversation. If a customer prefers conventional controls, the gesture layer can be disabled.

Quick ContactsMarcus J. Sterlingdrag contact to call
Line 2Active callblind transfer target
Line 1Held calldrag onto Line 2
ResultMerge / conferenceline-to-line action
MD3 Softphone Windows four-line call surface with held and active calls
Four-line call surface with held lines and one active call
Implementation Boundary

Public copy stays grounded in current build status.

These product lines should be presented as active development and controlled deployment work unless the release status changes.

MD3 Softphone

Current internal build evidence includes a WPF shell, shared SIP and media layers, SIP registration, multi-line call cards, transfer interaction work, Windows installer references, and Android app development.

AI Voice Agent

Current internal build evidence includes .NET 8 / WPF, local microphone and audio-file transcription, live Asterisk external-media transcription, adaptive bilingual recognition, local FAQ resources, optional local model refinement, TTS playback experiments, human-transfer intent handling, and saved session packages.

WG Mini UI

Current build evidence includes a browser peer-management UI, guided peer creation, managed and client-owned key paths, QR/config generation, peer lifecycle controls, operations insights, audit events, backup discipline, and security-check views. It is positioned as practical secure-access tooling, not a full zero-trust platform.

Next Step

Need one of these capabilities inside a business workflow?

Products and custom systems can meet in the same project when calls need to open records, capture context, or trigger follow-up.

Connect products to workflow