SIP Servers
Acme Packet - Net-Net Session Router and Net-Net Session Director
AlbaSoft - AlbaTalk PC to PC Call and More Chat SIP:albatalk.com
Anyuser.Net - SIP call agents, a SIP gateway and a SIP interface with H.323
Arelnet - SIPrime- Carrier Class gateway enables fully integration with SIP based networks.
Avaya SIP Enablement Services: SIP Enablement Services (SES) is a software suite of SIP-based services designed to run on the Avaya S8500 Media Server. SES creates a communication services layer within the Avaya Communications Architecture that mediates between Avaya MultiVantageTM Communication Applications and a wide range of standards-based user agents, web-based applications, and communication devices. SES combines the standard functions of a SIP proxy/registrar server with SIP trunking support and duplicated server features to create a highly scalable, highly reliable SIP communications network supporting telephony, instant messaging, conferencing, and collaboration applications.
For more information on SIP Enablement Services, click here>>>
BaseVoice; LLC - SIP Stack implementation of the JAIN SIP API v1.1 and a J2EE-based SIP Server that functions as a Proxy; Registrar and Presence Server.
BCM Communication Co.; Ltd. - SIP WLAN mobile IP phone; SIP IP phone
Beyazpinar Computaciones and Software - Seller of SIP Solutions for IP Telephony.
BlueNote Networks; Inc - Internet telephony software that combines SIP based voice and video with web services in an enterprise SOA to provide an alternative to today's VoIP and IP PBX solutions.
BrainHive Technologies - SIP IVRs; SIP Softswitches and SIP Conferencing solutions
Brekeke Software - Brekeke SIP Server provides reliable and scalable SIP communication platform. Advanced Edition provides features & performance for carrier-class/enterprise deployments. Free for personal and academic.
Carnegie Mellon University - Community server with presence
Cisco's SIP Proxy Server, Cisco SIP phones and Integrated Access devices deliver feature rich, scalable voice and data services to small businesses, small multiple dwelling units and similar applications.
CMS computers Limited - SIP server and SIP client devices
Columbia University Computer Science - Sipconf conferencing software. Complete sipd with interaction with other Unix utilities
Continuous Computing - Continuous Computing offers Trillium SIP Servers (Proxy; Registrar; Redirect Server). These offerings are compliant with industry standards; offer extensive APIs; and operate on all major OSs.
Creacode - NicSC SIP Session Controller is high performance and flexible SIP Call Controller, Registrar and NAT Traversal solution. Easy integration with an external Radius, HTTP based billing server or an ODBC compliant Database.
CTL Inc. - Delivering SIP Integration Solutions for IP Telephony.
Dialexia Communications - Dial-Gate® with IP-Tone® services is a Web-based SIP proxy and a centralized routing server for both the VoIP & PSTN networks.
Doretel Communications, Inc. - Doretel’s SIP Proxy Server has been designed to entitle Service Providers with an allinone Management Tool for all their varied IP Telephony Services.
E-Resource 21 Pte Ltd - YesTalkTM SIP server; coupled with third party VoIP Gateways; represents a full-featured system allowing for establishing; processing; monitoring; billing.
eDial - SIP-based hardware appliance for call control and management from any device.
EnGenius Technologies - EnGenius EnQue VOICE OVER IP SOLUTION. We have a line of low cost high feature SIP server and client devices. Including a WiFi phone; Desk Phone; SMB SIP servers; Modular Enterprise SIP servers.
Enter-Service - Ukranian SIP provider. Full SIP service - VOIP service; Free Web Calls; Free PC-to-PC sip service; Prepaid PSTN service
eStara - SIP Proxy service
Eyeball Networks - Eyeball Any-Firewall Server provides a scalable NAT and firewall traversal solution for SIP end-points based on IETF standards and drafts such as STUN; TURN and ICE. 100% Call Completion.
Funkwerk Enterprise Communications - Hybrid PBX with SIP gateway; analog trunk lines and ISDN trunks. Works as SIP proxy for VoIP extensions as well. elmeg ICT series
HCL Technologies Ltd - SIP Reusable components - UA & Server
Hughes Software Systems - 3261 compliant customizable SIP Server.
I Culture Commmunication Inc. - COMFiNiX Server; a full-featured SIP Server
IEC - SSP is a VXML 2.0; SIP 2.0 compatible IVR platform. It integrates OpenVXI with MRCP server; but also provides prompts/DTMF based IVR on its own. It also includes a conferencing engine.
Intel - Intel® NetStructure(TM) Host Media Processing Software. This software enables customers to build full-featured, scalable, and cost-effective software-only IP media servers for interactive voice response (IVR), voice mail, unified messaging, and conferencing.
IntelePeer - IntelePeer SIP Trunking supplies low-cost call origination and termination; long-haul transport; and any-to-any transcoding and mediation for leading telecom carriers and organizations worldwide.
IVR Technologies, Inc. - Enhanced services and integrated billing for SIP based networks.
Iwatsu Electric - NetSpeak is a SIP-based communications platform consisting of a VoIP SIP call control server, SIP key telephones, PSTN gateways and wireless handsets that provide superior IP voice quality using echo-canceling technology patented by Iwatsu.
Juphoon System Software - Provide excellent sip protocol stack; which written by ANSI C(30000 lines); sip stack support rfc 3261; 3262; 3263; 3265. etc. We provide high performance and reliable stack.
LanScape Corporation - LanScape's Centrex Proxy™ Server is a full featured scalable VOICE and VIDEO SIP proxy that will allow you to overcome all session and media NAT related issues. All Windows OS's supported. Much more.
LignUp Corporation - LignUp provides a 100% software converged communications platform deployed with a SIP server and voice mail unified messaging; auto attendant and partner turnkey applications.
M5T - M5T SIP-Proxy SAFE is an RFC 3261 based C++ framework for building advanced SIP servers such as core and edge proxies; application server; registrar and redirect servers.
Mailvision - SIP platform for unified messaging
Maple Leaf Communications - The MLC SIP Server provides enhanced call control for VOIP networks which are Session Initiation Protocol (SIP) based.
Mediatrix - The IP Communication Server
Meetinghouse Data Communications - SIP proxy server
Micronet Communication Inc - SP5210 VoIP Communication Server, a SIP-compliant proxy server.
Microsoft - Live Communications Server 2005 is built using industry-standard protocols Session Initiation Protocol (SIP) and SIP Instant Messaging and Presence Leveraging Extensions (SIMPLE), enabling a broad partner and developer ecosystem.
Mistral Software SIP Proxy Server
MizuTech - Mizu VOIP Server -high speed SIP server running on Windows / MS SQL platform
Mockingbird Networks - MPS/SIP MultiProtocol Server
Nadiz Int. Inv. Inc. - MaxiSIP - Free SIP service; free International SIP registrar powered by Nadiz Int. Inv. Inc.
Naturalvoice.us - Portuguese and English Free SIP provider located in New York - EUA
NEC - SV7000 full-featured telephony server. The SIP-enabled, client server configuration supports the broadest range of telephones in the market.
NGC Systems Sdn Bhd - Genico™ PowerBase; a Carrier-grade SIP server; supports RFC3261; with easy interface to POTS; mobile & 3G networks. Integration with services like IPCentrex; VoiceMail; VoiceVPN; IVR; voice portals...
nippon computer - sip server
Nokia Research - Nokia All-IP Mobility Core
My SIP Switch - SIP Switch is an online call management application; enabling you to use multiple SIP providers services from one piece of hardware and to manage all your calls on the fly: hang up; transfer; forward
Object Software - Redirect server
Objectworld Communications - Objectworld's UC Server; a UM & UC server for SME/SMB; simple deployment with wizard-based Windows installation. Fully SIP compliant. Video & Audio Conferencing. Active Directory; Exchange support.
OKSiJEN - SIP Proxy
OpenSIPStack - Open Source (MPL 1.0) Session Border Controller and SIP Registrar. Fully functional reference implementation of the OpenSIPStack library.
OpenXg - OpenSIPg is a full-blown SIP platform for service providers. Including the best from the open source world; integrating them with a powerful provisioning system. Comes with high performance pre-config
Oz.com - iPulse(TM)
Packetway, Inc. - TRiDENT - SIP Server based on Packetway's SIP/SDP/RTP/RTCP Stack
Polypix - AP5000 - Advanced SIP Proxy
PortaOne - VoIP Billing Solutions
Predictive Financial Technologies SIP-based Presence server solution
QuesCom - NextBX(r) Access Call Server
RadiSys Corp - AdvancedTCA(R) based SIP server
Raviant Networks - Preform(TM) Data Engine
Ridgeway Systems and Software - Firewall Tunnelling Proxy
Servonic - SIP-based SoftPBX (Proxy) Server
Sleipner - comedia RealTime: carrier grade SIP Proxy server
SNOM Technology SIP Registrar Proxy For VoIP In SMBs
Sun Microsystems - Sun GlassFish Communications Server is the only commercial Java EE + (JSR 289) SIP server developed in the open-source (Project SailFin). Learn about SailFin and partner solutions at our website.
Syndeo - Broadband Services System
SysMaster Corporation - VoIP Billing for SIP calls.
T3 Telecom Software; Inc. - Next-generation SIP-based unified messaging solutions including voice mail; speech recognition; text-to-speech; voice biometrics; interactive voice response; fax and automated attendant functionality.
Tekelec - SIP Server
TekSIP - SIP Registrar/Proxy fro Windows
Terminal Technologies - Atrium J2EE SIP Server
Transnexus - OSP Nexus (TM) Server
Trillium - Trillium SIP Stack
Voice System SRL - Complete SIP VoIP platform (SIP server/proxy/registrar; NAT traversal; provisioning; media server)
VozTelecom - WeSIP is an IMS compliant application server; which offers an open architecture with the main industry's Java-based APIs (SIPservlet) to enable the rapid creation of converged applicatons and services.
X&Y Communication Tech. Co.,Ltd - The X&YComm SIPSP is a SIP-based call-control software package that enables small and medium enterprises and service providers to build scalable next generation VOIP networks with lower costs and better service.
Zultys Technologies - MX250: SIP Server with application layer gateway, Voicemail, ACD, Gateway, Auto Attendant, Presence, Instant Messaging, Unified Messaging.
Zygox Inc - SIP Servers - Proxy, Redirect & Registrar.