We provide our PortaSIP customers with significantly discounted secondary PortaSIP licenses to build robust and reliable networks. There is a number of ways to make use of multiple PortaSIP servers achieving such benefits as fault-tolerance, geographic distribution, and high volumes of proxied traffic.

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

Clustering for Redundancy

Several physically independent PortaSIP servers may be used in a single system cluster environment to provide fault-tolerant services. Connected to PortaBilling, the system of multiple PortaSIP servers provides all the required service provisioning information and maintains a global database of SIP phone registrations.

A SIP phone user may connect to any of the available PortaSIP servers. If one server is unavailable due to a hardware failure or network problem, calls will be handled by the other PortaSIP servers.

Network Load Balancing

Service providers with global business exposure may chose to install a clustered system of multiple PortaSIP servers in various separate geographical locations. This allows them to keep the service running even if a whole hosting center in one place is down.

This kind of architecture also improves the network utilization: for instance, users in Asia would primarily use a PortaSIP server hosted in Singapore or Hong Kong, while European customers will work with a PortaSIP server in Frankfurt or London.

RTP Proxying

ITSPs with a high volume of proxied calls within their network can transfer the RTP proxying function to a dedicated secondary PortaSIP server. This will allow them to efficiently prioritize the transmission of IP packets carrying the voice media and prevent any resource-intensive operations on the SIP side from affecting the voice quality.

Since fast and reliable connectivity between PortaSIP server and RTP proxy is important, both main PortaSIP server and the secondary PortaSIP used as an RTP proxy server should be installed on the same LAN and connected by the FastEthernet link.