{"id":2020,"date":"2026-03-18T01:44:11","date_gmt":"2026-03-18T01:44:11","guid":{"rendered":"https:\/\/multahost.com\/blog\/?p=2020"},"modified":"2026-03-18T04:12:19","modified_gmt":"2026-03-18T04:12:19","slug":"vos3000-vs-freeswitch-vs-sippy-vs-voipswitch","status":"publish","type":"post","link":"https:\/\/multahost.com\/blog\/vos3000-vs-freeswitch-vs-sippy-vs-voipswitch\/","title":{"rendered":"VOS3000 vs FreeSWITCH vs Sippy vs VoIPSwitch \u2013 Best Softswitch for Wholesale VoIP Providers"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"vos-3000-vs-free-switch-vs-sippy-vs-vo-ip-switch-best-softswitch-for-wholesale-vo-ip-providers\">VOS3000 vs FreeSWITCH vs Sippy vs VoIPSwitch \u2013 Best Softswitch for Wholesale VoIP Providers<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Choosing the right <strong>VoIP softswitch<\/strong> is one of the most important decisions for telecom operators, wholesale VoIP providers, and international call routing businesses. A reliable softswitch allows you to manage routing, billing, SIP trunk connections, and carrier integration efficiently.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Among the most commonly used VoIP switching platforms in the telecom industry are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2699\ufe0f VOS3000 Softswitch<\/li>\n\n\n\n<li>\ud83d\udd27 FreeSWITCH Platform<\/li>\n\n\n\n<li>\ud83d\udce1 Sippy Softswitch<\/li>\n\n\n\n<li>\ud83d\udcbb VoIPSwitch (Windows Based)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Each platform has different strengths depending on the business model. In this guide we compare these systems based on <strong>performance, routing capability, scalability, ease of deployment, and cost efficiency<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you are planning to deploy a VoIP routing infrastructure or start a telecom business, this comparison will help you select the most suitable solution.<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#vos-3000-vs-free-switch-vs-sippy-vs-vo-ip-switch-best-softswitch-for-wholesale-vo-ip-providers\">VOS3000 vs FreeSWITCH vs Sippy vs VoIPSwitch \u2013 Best Softswitch for Wholesale VoIP Providers<\/a><ul><li><a href=\"#\ud83d\udcde-what-is-a-vo-ip-softswitch\">\ud83d\udcde What is a VoIP Softswitch?<\/a><\/li><li><a href=\"#\u2699\ufe0f-overview-of-vos-3000-softswitch\">\u2699\ufe0f Overview of VOS3000 Softswitch<\/a><\/li><li><a href=\"#\ud83d\udd27-overview-of-free-switch\">\ud83d\udd27 Overview of FreeSWITCH (VOS3000 vs FreeSWITCH)<\/a><\/li><li><a href=\"#\ud83d\udce1-overview-of-sippy-softswitch\">\ud83d\udce1 Overview of Sippy Softswitch (VOS3000 vs FreeSWITCH)<\/a><\/li><li><a href=\"#\ud83d\udcbb-overview-of-vo-ip-switch\">\ud83d\udcbb Overview of VoIPSwitch (VOS3000 vs FreeSWITCH)<\/a><\/li><li><a href=\"#\ud83d\udcca-softswitch-comparison-table\">\ud83d\udcca Softswitch Comparison Table (VOS3000 vs FreeSWITCH)<\/a><\/li><li><a href=\"#\ud83d\ude80-why-many-vo-ip-providers-choose-vos-3000\">\ud83d\ude80 Why Many VoIP Providers Choose VOS3000<\/a><\/li><li><a href=\"#\u2601\ufe0f-vos-3000-server-hosting-deployment\">\u2601\ufe0f VOS3000 Server Hosting &amp; Deployment<\/a><\/li><li><a href=\"#\ud83d\udcde-need-vos-3000-server-or-installation-service\">\ud83d\udcde Need VOS3000 Server or Installation Service?<\/a><\/li><li><a href=\"#\u2753-faq-vos-3000-vs-free-switch\">\u2753 FAQ \u2013 VOS3000 vs FreeSWITCH<\/a><ul><li><a href=\"#what-is-the-main-difference-between-vos-3000-and-free-switch\">What is the main difference between VOS3000 and FreeSWITCH?<\/a><\/li><li><a href=\"#which-softswitch-is-best-for-wholesale-vo-ip\">Which softswitch is best for wholesale VoIP?<\/a><\/li><li><a href=\"#can-vos-3000-be-used-with-call-center-platforms\">Can VOS3000 be used with call center platforms?<\/a><\/li><li><a href=\"#do-i-need-a-dedicated-server-for-vos-3000\">Do I need a dedicated server for VOS3000?<\/a><\/li><li><a href=\"#where-can-i-get-vos-3000-hosting-or-installation-service\">Where can I get VOS3000 hosting or installation service?<\/a><\/li><\/ul><\/li><li><a href=\"#\ud83d\udcde-need-call-center-setup-support\">\ud83d\udcde Need Professional VOS3000 Setup Support?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-what-is-a-vo-ip-softswitch\">\ud83d\udcde What is a VoIP Softswitch?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>VoIP softswitch<\/strong> is the central switching platform that routes calls between SIP carriers, VoIP providers, gateways, and customers. It manages call authentication, least cost routing, codec handling, billing integration and network interconnection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Wholesale VoIP operators rely heavily on softswitch platforms to manage large volumes of international traffic efficiently.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Most VoIP softswitches support:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udce1 SIP Trunk connectivity<\/li>\n\n\n\n<li>\ud83d\udcca Call routing &amp; LCR<\/li>\n\n\n\n<li>\ud83d\udcb0 Billing integration<\/li>\n\n\n\n<li>\ud83d\udd04 Carrier redundancy<\/li>\n\n\n\n<li>\ud83d\udcde Gateway connections<\/li>\n\n\n\n<li>\ud83d\udcc9 ASR \/ ACD monitoring<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Platforms such as <strong>VOS3000<\/strong> have become very popular in wholesale telecom networks because they combine routing, management and billing features in a single system.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u2699\ufe0f-overview-of-vos-3000-softswitch\">\u2699\ufe0f Overview of VOS3000 Softswitch<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>VOS3000<\/strong> is one of the most widely used softswitch platforms in the wholesale VoIP industry. It is designed specifically for telecom carriers and international voice routing providers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It provides an integrated platform for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udce1 Carrier interconnection<\/li>\n\n\n\n<li>\ud83d\udcca Intelligent call routing<\/li>\n\n\n\n<li>\ud83d\udcde SIP trunk management<\/li>\n\n\n\n<li>\ud83d\udcc8 Traffic monitoring<\/li>\n\n\n\n<li>\ud83d\udcb0 Account and billing control<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Many telecom operators deploy VOS3000 on dedicated servers or cloud infrastructure to handle large volumes of international VoIP traffic.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can read more technical details in our related guide:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <a href=\"https:\/\/multahost.com\/blog\/vos3000-installation\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Installation Guide<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <a href=\"https:\/\/multahost.com\/blog\/vos3000-hosting\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Hosting Server Solutions<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udd27-overview-of-free-switch\">\ud83d\udd27 Overview of FreeSWITCH (VOS3000 vs FreeSWITCH)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>FreeSWITCH<\/strong> is an open-source VoIP platform widely used for building telecom applications such as PBX systems, conferencing platforms and voice gateways.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Unlike VOS3000, FreeSWITCH is more of a <strong>telephony engine<\/strong> rather than a complete wholesale routing system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FreeSWITCH strengths include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udd27 Highly customizable architecture<\/li>\n\n\n\n<li>\ud83d\udcde Advanced telephony features<\/li>\n\n\n\n<li>\ud83d\udce1 SIP and WebRTC support<\/li>\n\n\n\n<li>\u2699\ufe0f Open source flexibility<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">However, for wholesale VoIP routing businesses, FreeSWITCH often requires additional modules or billing platforms to function as a full softswitch.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udce1-overview-of-sippy-softswitch\">\ud83d\udce1 Overview of Sippy Softswitch (VOS3000 vs FreeSWITCH)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sippy Softswitch<\/strong> is another platform designed for VoIP carriers and telecom providers. It offers routing, billing integration and carrier management features.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Key capabilities include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udcca Least Cost Routing<\/li>\n\n\n\n<li>\ud83d\udce1 SIP trunk interconnection<\/li>\n\n\n\n<li>\ud83d\udcc9 Call quality monitoring<\/li>\n\n\n\n<li>\ud83d\udcde Carrier gateway management<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Sippy is known for stable routing performance but the licensing cost can be relatively higher compared to some other platforms.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcbb-overview-of-vo-ip-switch\">\ud83d\udcbb Overview of VoIPSwitch (VOS3000 vs FreeSWITCH)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>VoIPSwitch<\/strong> is a Windows-based VoIP switching platform used mainly by smaller telecom providers and VoIP resellers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It offers features such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udcde VoIP call routing<\/li>\n\n\n\n<li>\ud83d\udcb0 Billing platform<\/li>\n\n\n\n<li>\ud83d\udcca Reseller management<\/li>\n\n\n\n<li>\ud83d\udce1 SIP trunk connectivity<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">However, large wholesale telecom operators often prefer Linux based softswitch solutions because of better scalability and performance.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcca-softswitch-comparison-table\">\ud83d\udcca Softswitch Comparison Table (VOS3000 vs FreeSWITCH)<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Feature<\/th><th>VOS3000<\/th><th>FreeSWITCH<\/th><th>Sippy<\/th><th>VoIPSwitch<\/th><\/tr><tr><td>Primary Use<\/td><td>Wholesale VoIP Routing<\/td><td>Telephony Engine<\/td><td>Carrier Softswitch<\/td><td>VoIP Reseller Platform<\/td><\/tr><tr><td>Operating System<\/td><td>Linux<\/td><td>Linux<\/td><td>Linux<\/td><td>Windows<\/td><\/tr><tr><td>Integrated Routing<\/td><td>Yes<\/td><td>No (Requires configuration)<\/td><td>Yes<\/td><td>Yes<\/td><\/tr><tr><td>Scalability<\/td><td>High<\/td><td>High<\/td><td>High<\/td><td>Medium<\/td><\/tr><tr><td>Deployment Complexity<\/td><td>Medium<\/td><td>Advanced<\/td><td>Medium<\/td><td>Easy<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\ude80-why-many-vo-ip-providers-choose-vos-3000\">\ud83d\ude80 Why Many VoIP Providers Choose VOS3000<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Many wholesale telecom operators prefer VOS3000 because it offers a ready-to-deploy routing system designed specifically for carrier interconnection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Some major advantages include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u26a1 Optimized for high call volumes<\/li>\n\n\n\n<li>\ud83d\udcca Integrated routing system<\/li>\n\n\n\n<li>\ud83d\udce1 Carrier SIP trunk management<\/li>\n\n\n\n<li>\ud83d\udcc9 Traffic quality monitoring<\/li>\n\n\n\n<li>\ud83d\udd04 Flexible routing policies<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These features make VOS3000 suitable for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83c\udf0d International VoIP wholesalers<\/li>\n\n\n\n<li>\ud83d\udcde Call center operators<\/li>\n\n\n\n<li>\ud83d\udce1 SIP trunk providers<\/li>\n\n\n\n<li>\ud83d\udcca Telecom routing businesses<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u2601\ufe0f-vos-3000-server-hosting-deployment\">\u2601\ufe0f VOS3000 Server Hosting &amp; Deployment<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Deploying a softswitch requires a stable server environment with optimized network connectivity and routing configuration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At <strong>Multahost<\/strong>, we provide:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\ude80 VOS3000 Pre-Installed Servers<\/li>\n\n\n\n<li>\u2601\ufe0f Cloud VOS3000 Hosting<\/li>\n\n\n\n<li>\ud83d\udcbb Dedicated VOS3000 Servers<\/li>\n\n\n\n<li>\u2699\ufe0f VOS3000 Installation Services<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Our optimized server environments are designed for VoIP routing businesses and telecom providers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcd6 Related resources:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/multahost.com\/blog\/vos3000-server-rent\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Server Rental Guide<\/a><br><a href=\"https:\/\/multahost.com\/blog\/vos3000-rent-installation-price\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Installation Price Guide<\/a><br><a href=\"https:\/\/multahost.com\/blog\/vos3000-call-center-solution\/\" target=\"_blank\" rel=\"noreferrer noopener\">VOS3000 Call Center Solution<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-need-vos-3000-server-or-installation-service\">\ud83d\udcde Need VOS3000 Server or Installation Service?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you are planning to deploy a VOS3000 routing platform for your VoIP business, you can contact our team for server deployment and installation services.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>WhatsApp:<\/strong> +8801911119966<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83c\udf10 Website: https:\/\/vos3000.com<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We provide pre-installed VOS3000 servers and deployment assistance for telecom operators and VoIP providers worldwide.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u2753-faq-vos-3000-vs-free-switch\">\u2753 FAQ \u2013 VOS3000 vs FreeSWITCH<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-is-the-main-difference-between-vos-3000-and-free-switch\">What is the main difference between VOS3000 and FreeSWITCH?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">VOS3000 is designed specifically for wholesale VoIP routing and telecom carriers, while FreeSWITCH is a flexible telephony engine used to build various VoIP applications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"which-softswitch-is-best-for-wholesale-vo-ip\">Which softswitch is best for wholesale VoIP?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Wholesale VoIP providers often prefer platforms like VOS3000 or Sippy because they provide integrated routing and carrier management features.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"can-vos-3000-be-used-with-call-center-platforms\">Can VOS3000 be used with call center platforms?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, VOS3000 can be connected with call center dialer systems such as VICIDIAL to route traffic through SIP carriers and telecom gateways.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"do-i-need-a-dedicated-server-for-vos-3000\">Do I need a dedicated server for VOS3000?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Many operators deploy VOS3000 on dedicated servers or optimized cloud environments depending on expected traffic volume.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"where-can-i-get-vos-3000-hosting-or-installation-service\">Where can I get VOS3000 hosting or installation service?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You can contact our team for VOS3000 server hosting and installation assistance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>WhatsApp:<\/strong> +8801911119966<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udce1 <strong>Start your VoIP routing infrastructure today with VOS3000.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\ud83d\udcde-need-call-center-setup-support\">\ud83d\udcde Need Professional VOS3000 Setup Support?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For professional VOS3000 installations and deployment:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udcf1 <strong>WhatsApp:<\/strong> <a href=\"https:\/\/wa.me\/8801911119966\" target=\"_blank\" rel=\"noopener\">+8801911119966<\/a><br>\ud83c\udf10 <strong>Website:<\/strong> <a href=\"https:\/\/www.vos3000.com\" target=\"_blank\" rel=\"noopener\">www.vos3000.com<\/a><br>\ud83c\udf10 <strong>Blog:<\/strong> <a href=\"https:\/\/multahost.com\/blog\">multahost.com\/blog<\/a><br>\ud83d\udce5 <strong>Downloads:<\/strong> <a href=\"https:\/\/www.vos3000.com\/downloads.php\" target=\"_blank\" rel=\"noopener\">VOS3000 Downloads<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><img data-recalc-dims=\"1\" height=\"540\" width=\"809\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/vos3000-installation-vos-installation-vos-rental-1024x683.png?resize=809%2C540&#038;ssl=1\" alt=\"VOS3000 vs FreeSWITCH vs Sippy vs VoIPSwitch, VOS3000 Installation Service, VOS3000 Server Rental, VOS3000 Server\" title=\"\"><\/td><td><img data-recalc-dims=\"1\" height=\"540\" width=\"809\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/vos3000-installation-vos-installation-vos-rental-1024x683.png?resize=809%2C540&#038;ssl=1\" alt=\"VOS3000 vs FreeSWITCH vs Sippy vs VoIPSwitch, VOS3000 Installation Service, VOS3000 Server Rental, VOS3000 Server\" title=\"\"><\/td><td><img data-recalc-dims=\"1\" height=\"540\" width=\"809\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/multahost.com\/blog\/wp-content\/uploads\/2026\/03\/vos3000-installation-vos-installation-vos-rental-1024x683.png?resize=809%2C540&#038;ssl=1\" alt=\"VOS3000 vs FreeSWITCH vs Sippy vs VoIPSwitch, VOS3000 Installation Service, VOS3000 Server Rental, VOS3000 Server\" title=\"\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Compare VOS3000 vs FreeSWITCH, Sippy Softswitch and VoIPSwitch to find the best VoIP softswitch for wholesale VoIP providers, routing businesses and call center 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