Class 5 softswitch

Voipswitch’s Class 4/5 softswitch is a multiservice telephony server which leverages SIP and other related communication protocols. It combines the SIP server and application server roles in a next generation network (NGN).

    • Proxy server

    • Registrar server

    • Back-to-back user agent (B2BUA)

    • Presence server

    • IVR – provides interactive voice scenarios for Calling Cards and Unified Communication features

    • Voicemail

    • Call recording – records conversations to a file or live streaming format

    • Legal Interception

    • Transcoding

    • Media Relay/RTP proxy

    • Fax server T38

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  • SIP, IMS extensions

  • Media Relay/Proxy with NAT endpoints handling

  • ICE mechanism for Peer to Peer session establishment, STUN

  • SIP SIMPLE Instant Messaging


  • DTLS

  • WebRTC compatible


  • Credit control application, support for Prepaid and Postpaid model

  • Subscriptions, packages, bundles

  • Real time multi-layer charging with credit control for each ownership level (Resellers)

  • Advanced rating

  • Multicurrency


  • Least Cost Routing

  • Load balancing/sharing for termination endpoints

  • Traffic failover with multiple “waterfall” levels

  • Multiple routing plans


  • Multilayered accounts ownership structure (Owner, 3 levels of Resellers, Sales Agents)

  • Multiple devices sharing one account (support for SIP INSTANCE)

  • Sharing accounts among services e.g. RCS mobile client shares account with Calling card PIN or PINless service

Telephony features/ Enterprise Telephony (PBX)

  • Follow me/Find me

  • Hunt Groups

  • Parking

  • Transfers, hold, second line, shared line, BLF

  • Voicemail

  • PBX specific features: Dial by Name, extensions etc.

  • Autoattendants

  • Learn more in the Unified Communication section

Media Gateway

  • Playing audio/video – Interactive Voice Response system with xml based flow scenarios

  • Call recording to a file or live stream (mp3, mp4, HLS)

  • Legal Interception

  • Transcoding

Fax server

  • T38 protocol

  • Email to fax/fax to email

  • Web fax viewer

  • Sending directly from web

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