PortaSIP is a clusterable and highly scalable SIP softswitch of class 4 and class 5. It offers a variety of both advanced class 5 features for hosted IPPBX or IP Centrex services as well as the majority of functionality normally attributed to session border controllers (SBC), usually called class 4 features, for example:

• follow-me and group pickup
• call waiting and call parking
• presence
• instant messaging
  
• topology hiding
• transparent and smart NAT traversal
• distributed denial-of-service (DDoS) attack prevention
• RTP and media proxying

For more technical and/or pricing information about PortaSIP please contact our sales team.

In this sense, PortaSIP combines two major VoIP network elements in one: it can seamlessly play a double role of a highly sophisticated softswitch for hosted IPPBX/IPCentrex services and a very robust SBC at the same time. Multiple PortaSIP servers can create geographically distributed clusters for load balancing, redundancy, and linear capacity scalability.

As an integral part of PortaSwitch, it also provides a powerful LCR, preference-based, priority-based, and dynamic (e.g. ASR, PDD) routing engine.

Based on the Session Initiation Protocol, PortaSIP provides a full array of call routing capabilities to maximize performance in both small and large packet voice networks. PortaSIP allows carriers and IP telephony service providers to deliver communication services at incredibly low initial and operating costs, which cannot be matched by yesterday’s circuit-switched and narrow-band service provider PSTN networks.

Being a fully integrated part of PortaSwitch, PortaSIP provides carriers and service providers with an open, SIP-based architecture to support enhanced voice applications such as hosted IP PBX service, unified messaging, conferencing and IP call center, as well as a whole new class of services integrating telephony with the web, e-mail and other communications portals.

With PortaSIP, services that combine elements from telephony and other web applications such as e-mail, messaging, Internet and video streaming can be created easily and in a shorter planning and implementation cycle, allowing increased market responsiveness.

PortaSIP offers a platform for delivering innovative, high-margin services that may be deployed over IP, as well as cable, POTS, Broadband, and ISDN networks.

Typical PortaSIP Network Architecture

PortaSIP supports:

• Any SIP endpoint (network element which can terminate a SIP session)
• Universal numbering plan, PBX extensions and other numbering schemes
• Customer dialing rules and abbreviated dialing
• Clustering of gateways and other servers

The Customer Dialing Rules & Abbreviated Dialing feature works with both SIP and H.323, with adequate support of either a SIP server or Cisco TCL IVR. A PortaBilling customer can set up Dialing Rules as an international prefix, outside prefix, direct number (e.g. 911) or abbreviated dialing for his accounts. More than one dialing rule may be assigned to each account.

The system allows “clustering” of gateways and other servers to “roll over” in case of capacity constraints or failure. This allows several devices to be used in tandem, with one overflowing to the next if the number of calls being handled exceeds the limitations of a current device, or if a device fails.

Read more about PortaSIP Applications »