D-Phone Business is a multi-tenant cloud-based software as a service solution for deploying a call-center system for your organization.
Feature:
- Secure voice call via SIP over WebSockets
- Mobile App / Web Phone / Landline call supported
Demo Account / Pricing : please contact osd_support@osd.co.th
https://www.facebook.com/osdcompany/
VoIP Phone application which operate over SIP over WebSocket protocol.