Ingate produces the world's first SIP-capable firewalls and SIParators. The founders of Ingate entered the firewall market for one reason: to enable business of all sizes to utilize the benefits of SIP-based communications. Ingate understands that presence, instant messaging, VoIP and audio/video conferencing are powerful business tools that enable enterprises to maintain constant communications with both internal and external stakeholders. As more businesses utilize these applications, service providers are responding to the need for a universal protocol that allows interoperability between all providers.