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SIP for PBX in a Flash Simplify Your Communications Infrastructure with SIP for PBX in a Flash™ The SIP.US trunking service is compatible with the Astrisk open source PBX and a variety of Astrisk distributions, including PBX in a Flash.  The combination of SIP and PBX in a Flash gives companies a flexible, powerful and…

SIP for Allworx PBX Effortless Communication with SIP for Allworx® SIP.US is compatible with many PBX solutions that deliver unified communications and call control, including Allworx. Implementing SIP for Allworx helps businesses lower the cost of communications while enjoying hassle-free administration and a variety of enterprise level features. About Allworx Allworx is dedicated to making it effortless…

SIP for Cisco CallManager and IOS Devices Seamless Integration with SIP for Cisco CallManager SIP.US is compatible with many of the networking devices that deliver unified communications and call control, including devices using Cisco IOS. Implementing SIP for Cisco IOS devices helps drive business communications costs down, while leveraging a reliable, secure infrastructure. About Cisco IOS…

SIP for FreeSWITCH Deploy SIP for FreeSWITCH™ The SIP.US trunking service is compatible with several free, open source PBX solutions including FreeSWITCH. By implementing SIP for FreeSWITCH you can reduce the cost of your communications infrastructure and take advantage of the flexibility and customization the combined solutions offer. About FreeSWITCH FreeSWITCH is an open source, free…

SIP.US for 3CX Windows Server PBX with SIP.US for 3CX® SIP.US has developed our trunking service to be compatible with a variety of free, open-source, call control and unified communications solutions including 3CX. 3CX is a top-tier software-based phone system designed for Microsoft Windows, offering a comprehensive Unified Communications Solution. By deploying SIP for 3CX,…

SIP for Switchvox Unified Communications with SIP for Switchvox® SIP.US is designed to be compatible with many PBX solutions and Switchvox is no exception.  SIP for Switchvox reduces communications costs and administrative effort, yet still provides the sophisticated unified communications features that businesses desire. About Switchvox Switchvox, by Digium is a full unified communications system…

SIP for Cisco SPA8000 SIP Enable Analog Phones With the Cisco SPA8000 8-port IP Telephony Gateway® Analog telephony adapters or ATAs make it possible to use analog telephones with digital, IP-based hardware and software.  SIP.US is compatible with a variety of ATAs including the Cisco SPA8000 (formerly Linksys SPA8000). By SIP enabling analog telephones, companies are…

SIP for the Grandstream HT701 Enable Analog Phones With SIP for Grandstream HT701 ® Analog telephony adapters (commonly called ATAs) facilitate the use of analog telephones and other devices with IP-based, digital hardware and software.  Many ATA devices are supported by SIP.US, including the Grandstream HT701.  SIP for the Grandstream HT701 is a great way…

SIP for Linksys PAP2TAnalog Telephony Adapter Enable Analog Phones With SIP for Linksys PAP2T® Analog telephony adapters (commonly called ATAs) enable the use of analog telephones and other equipment with digital hardware and software.  SIP.US is compatible with a variety of ATA devices including the Linksys PAP2T.  SIP for Linksys PAP2T helps clients reduce both…

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