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Sipera Systems specialized in security solutions for Voice-over-IP (VoIP) and Unified Communications (UC) environments. The company engineered application-layer security devices designed to protect real-time communication sessions. Their technology facilitated the secure, controlled deployment of IP-based business communication systems, safeguarding inherent vulnerabilities within these complex architectures.
Founded in 2003 by Krishna Kurapati, Sipera Systems emerged from the realization that the expansion of IP-based communication demanded dedicated security. Kurapati identified unique challenges of real-time voice and video traffic, which traditional network security inadequately covered. This insight drove the development of purpose-built infrastructure for unified communication security, establishing the company’s foundational direction.
Sipera Systems served enterprises and communication service providers fortifying advanced communication infrastructures. The company aimed to enable widespread, secure adoption of unified communications, ensuring interaction integrity and privacy for its clientele. This mission guided their strategy, ultimately leading to its acquisition by Avaya in October 2011, integrating its security capabilities into a broader communication portfolio.
Sipera Systems has raised $33.0M across 3 funding rounds.
Sipera Systems has raised $33.0M in total across 3 funding rounds.
Sipera Systems has raised $33.0M in total across 3 funding rounds.
Sipera Systems's investors include S3 Ventures, Two Bear Capital.
Sipera Systems was a technology company specializing in Unified Communications (UC) solutions, particularly Session Border Controller (SBC) capabilities for the safe, simple, and controlled deployment of IP-based business communications.[1][2] It served enterprises needing secure UC deployments, solving problems around securing voice and video traffic over IP networks by providing fit-for-purpose, enterprise-class SBC technology.[2][3] The company positioned itself as a worldwide leader in this niche before its acquisition by Avaya, after which it became fully integrated into Avaya's UC portfolio, ceasing independent operations.[2][4]
Sipera Systems emerged in the mid-2000s amid the rise of IP telephony and UC, focusing on security solutions for enterprise communications.[1] Key details on founders are not specified in available records, but the company quickly gained traction as a provider of SBC technology, establishing a UK subsidiary (SIPERA SYSTEMS UK LIMITED, incorporated around 2008) to support global operations.[3] A pivotal moment came with its acquisition by Avaya, announced in the late 2000s, marking the end of its standalone journey and integration into a larger UC powerhouse.[2][4]
Sipera rode the early 2000s shift to IP-based telephony and UC, where enterprises transitioned from traditional PBX systems to internet-protocol networks vulnerable to security threats like eavesdropping and denial-of-service attacks.[1][2] Its timing aligned with exploding demand for SBCs to enable secure SIP trunking and remote work communications, influencing the ecosystem by paving the way for integrated UC platforms.[4] Market forces favoring convergence of voice/data networks boosted its relevance, and its Avaya integration accelerated adoption of robust SBCs in enterprise stacks.[2]
As an acquired entity fully absorbed by Avaya, Sipera Systems no longer operates independently, with its technology enduring within Avaya's (now part of private equity-owned structures) UC offerings.[2][4] Evolving trends like cloud UC, 5G integration, and AI-driven security will shape its legacy tech, potentially expanding into hybrid work and edge computing. Its influence persists indirectly, underscoring how specialized security innovators fuel larger platforms in the maturing UC market—echoing Sipera's original mission as a leader in safe IP deployments.[1]
Sipera Systems has raised $33.0M across 3 funding rounds. Most recently, it raised $10.0M Series D in May 2010.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| May 1, 2010 | $10.0M Series D | S3 Ventures, Two Bear Capital | |
| Sep 1, 2007 | $10.0M Series C | Two Bear Capital | |
| Mar 1, 2006 | $13.0M Series B | Two Bear Capital |
