Given the technological advancements in business communication, it’s no surprise that conversations have now shifted from the boardroom to broadband. Front and centre of this change is Voice over Internet Protocol (VoIP), enabling businesses to communicate across borders.
Since VoIP uses the Internet to make and receive calls, it’s a major cost-saver for companies who operate globally. Moreover, with features like auto-attendant and voicemail-to-email, more businesses are embracing it.
Naturally, it doesn’t come without its fair share of risks. Your conversations, broken down into digital data, can be intercepted if you don’t have proper security measures in place. And if you are discussing confidential business information, all the more reason to be on alert.
As the next-gen VoIP systems arrive, featuring AI analytics and cloud integration, the need for end-to-end encryption matters now more than ever. Here’s what a few of the industry experts think.
Our Experts
- Amruth Laxman: Founding Partner at 4Voice.
- Ravitez Dondeti: Engineering Manager and Mobile Innovator, OpenSIPS Contributor.
- Deepak Shukla: CEO of Pearl Lemon Web.
- Pete Freeman: Managing Director at FreeClix.
- Kristian Torode: Director and Founder of Crystaline.
- Charlie Nahabedian: CEO and Co-founder of VK Digital Health.
- Benjamin Tom: Utility Specialist at Electricity Monster.
Amruth Laxman, Founding Partner at 4Voice
With the adoption of cloud computing and AI within communication technologies, the need for effective encryption of next-gen VoIP systems has become imperative. Next-gen VoIP systems include video, messaging, and real-time customer engagement systems, many of which contain sensitive personal and business information. When calls lack adequate encryption, they become a crucial vulnerable point in a company’s data protection plan.
The problem has always been the delay the encryption process introduces in combination with the quality of the voice. The leading VoIP service providers solve this problem with intelligent adaptive encryption: systems that contextually and rationally adjust encryption strengths based on data streams and nodes without sacrificing quality.
Mutual, robust encryption creates trust. Bidirectional communication remains the implicit and primary expectation of most customers. When targets are defined and mutually agreed upon, reasonable encryption which is deployed and performed in a real-time manner maintains the customer’s trust in the brand. Adaptive encryption that is set prior is the only choice for competing VoIP systems that are set to lose and those that remain secure and hyper adaptive.
In a world where business relationships are built on digital trust, robust encryption, hyper adaptive and set prior, is the standard for communication and VoIP systems that are set to change communication systems in the future.
Ravitez Dondeti, Engineering Manager and Mobile Innovator, OpenSIPS Contributor
The push for next-generation VoIP encryption isn’t just a technical upgrade—it’s become a business imperative. Having worked directly on upgrading SIP to Secure SIP and RTP to SRTP protocols, I’ve seen firsthand how critical this transition has become.
The biggest challenge isn’t the technology itself, but interoperability. Legacy VoIP systems often can’t handle encrypted protocols, and the increased CPU requirements can strain existing infrastructure. During our implementations, we discovered you can easily capture and replay unencrypted RTP packets, but encrypted communications eliminate this vulnerability entirely.
Companies delaying this migration face escalating risks: regulatory penalties in banking and healthcare, sensitive conversations being intercepted, and potentially company-ending lawsuits if breaches occur. One security incident can destroy decades of customer trust.
My advice? Take a phased approach. Build infrastructure to monitor voice quality metrics throughout the transition, and remember—if your encryption isn’t end-to-end, it’s essentially pointless. Half-encrypted calls provide false security.
Secure VoIP has evolved from a premium feature to the default standard, like HTTPS for web traffic. The question isn’t whether to implement encryption, but how quickly you can complete the migration before your unprotected communications become a liability.
Deepak Shukla, CEO of Pearl Lemon Web
These systems are everywhere now, and that also means there’s more chance of sensitive info being intercepted. Encryption keeps calls private, which is a must for both individuals and businesses trying to stay safe from data leaks or cyberattacks.
It also keeps calls trustworthy. No one wants a call that could be tampered with or faked, especially if it involves confidential client conversations.
Pete Freeman, Managing Director at FreeClix
Encryption in next-generation VoIP systems is absolutely essential for modern business communications. As internet-based calling replaces traditional phone lines, the security landscape has fundamentally changed.
End-to-end encryption protects sensitive business conversations from interception at multiple points across the internet. Unlike traditional phone lines where tapping required physical access, VoIP calls can be vulnerable anywhere along their digital path without proper encryption. For businesses handling confidential client information, financial data, or proprietary discussions, this protection is non-negotiable.
With remote and hybrid working now standard, VoIP calls are increasingly made from unsecured networks—home broadband, public Wi-Fi, or mobile connections. Encryption ensures conversations remain private regardless of location.
Without robust encryption, businesses face serious risks: data breaches, regulatory non-compliance under GDPR and similar frameworks, loss of client trust, and potential corporate espionage. These aren’t theoretical concerns—unencrypted VoIP traffic can be intercepted using readily available tools.
As next-gen VoIP evolves with AI integration, unified communications, and enhanced collaboration features, encryption must remain foundational. The question isn’t whether encryption is needed—it’s ensuring it’s implemented correctly, maintained properly, and never compromised for convenience. Security cannot be an afterthought in modern voice communications.
Kristian Torode, Director and Founder of Crystaline
Encryption is crucial for VoIP calling, now more than ever as we enter the next
generation of digital communications. Powerful AI features such as real-time
transcription and voice sentiment analysis are leading to a growing reliance on VoIP
among businesses — but this rise in usage comes with an increased need for strong
cyber security.
Regardless of the size of an organisation, whether a small enterprise or a large-scale
corporation, implementing cyber security measures across digital systems should be
non-negotiable. And an important place to start is by encrypting VoIP services.
If a hacker manages to infiltrate a company’s system, VoIP encryption offers an extra
level of protection. Without it, there’s an increased risk of conversations being
intercepted or data getting leaked.
At Crystaline, we’re huge advocates for VoIP due to its cost, efficiency and reliability,
particularly with the next-gen features we’re seeing on the market. But as it’s an
internet-based technology, this means cyber security cannot be overlooked.
So, for businesses looking to upgrade their communications systems with new VoIP
services, they must ensure the required cyber security measures are in place, starting
with encryption.
Charlie Nahabedian, CEO and Co-founder of VK Digital Health
Digitised voice has been around since 1937, when Alec Reeves conceptualised PCM. Many variations later, we have VoIP to fit the transmission media. In healthcare, next-gen VoIP isn’t just about clarity or convenience – it’s about confidentiality.
Because of HIPAA, VoIP must meet the same rigor as medical records. Looking ahead, the next wave of telehealth and AI-enabled patient engagement must treat voice data to meet this and other performance needs.
Benjamin Tom, Utility Specialist at Electricity Monster
The next generation voice over internet protocol calls will require the use of a highly encrypted process since it will guarantee the needed authentication. The issue of my practice of endpoint security with regard to illegal access is among my priorities in any digital communication system. We apply very protocols such as the Secure Real-time Transport Protocol (SRTP) or Zimmermann Real-time Transport Protocol (ZRTP) to make sure that we are sure of who the initiator was and who was the receiver. The importance of such authentication is that it goes a long way in eliminating the chances of successful spoofing and impersonation attacks that are inevitable in the online world.
At a personal level, this security can be designed in the appropriate way that allows one to carry out sensitive conversations in any network without jeopardising the secrecy and integrity of the conversations. This is what is called the lowest point of my team. The degree of trust, as the customers state, is far greater in the case when they are in the position to understand that the medium of communication is cryptographically sound, and it is absolutely necessary to most of the contemporary enterprises.
