SIP Server

TekSIP is a SIP Registrar and SIP Proxy for Windows. TekSIP supports UDP, TCP, TLS and WebSocket (IPv4 & IPv6) transports. TLS and Secure WebSocket are supported in only commercial editions. TekSIP is tested on Microsoft Windows Vista, Windows 7/8/10/11 and Windows 2008-2022 server. TekSIP can be deployed as a signaling server for WebRTC based SIP phones. TekSIP complies with RFC 3261, RFC 3263, RFC 3311, RFC 3581 and RFC 3891. It supports NAT traversal and ENUM. Please see technical details about NAT traversal in Readme. You can select IP address to be listened and alternative SIP endpoints for outgoing calls. You can also log session details into a log file and monitor active registrations and sessions in real-time. You can monitor number of active registrations and sessions using Windows Performance Monitor (Perfmon.exe). TekSIP can redirect calls to alternate endpoint when called endpoint is unavailable (Off-line, busy...). Active SIP session can be terminated via GUI.

The Ingate SIParator® is a powerful, flexible and cost-effective Enterprise Session Border Controller (E-SBC) for SIP connectivity, security and interoperability, such as connecting PBXs and Unified Communications (UC) solutions to SIP trunking service providers. The SIParator simplifies SIP trunking and makes it easy to connect remote UC end points, aggregate SIP trunks and distribute sessions between sites and service delivery points. It's utilized for Real-Time communications security, SIP interoperability and extensive connectivity. The SIParator® is compatible with all existing networks and comes with a standard SIP proxy and a SIP registrar. It has support for NAT and PAT as well as for TLS and SRTP to encrypt both SIP signaling and media, eliminating the security issue most commonly associated with using enterprise VoIP.