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

• SIP, IMS extensions

• Media Relay/Proxy with NAT endpoints handling

• ICE mechanism for Peer to Peer session establishment, STUN

• SIP SIMPLE Instant Messaging

• Presence SUBSCRIBE/PUBLISH

• 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

• 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

• 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

• T38 protocol

• Email to fax/fax to email

• Web fax viewer

• Sending directly from web