Gateways | NFON Knowledge Base [Contact](# "Contact") ![](/web-assets/f/290788/40x40/d98615a3ea/nfon-sales-contact.svg) Sales & General * [Talk to Sales](tel:+498000636624) * [Write to us](/en/request-information) Search * [![Products](https://a.storyblok.com/f/290788/40x40/539cd331b9/nfon-products.svg) Products](#) Call & Work ![AI icon](/assets/ai_icon.webp) + [Cloud Telephony](/en/products/cloud-telephony/) + [SIP Trunk](/en/products/enablement/) + [Devices](/en/products/devices) Build & Automate ![AI icon](/assets/ai_icon.webp) + [Assistants](/en/products/ai/assistants) + [Bots](/en/products/ai/bots) + [AI Agent Studio](/en/products/ai/agent-studio) Engage & Support ![AI icon](/assets/ai_icon.webp) + [Contact Center](/en/products/customer-contact/) Integrations & Add ons + [Integrations & Add ons](/en/integrations/) * [![Solutions](https://a.storyblok.com/f/290788/40x40/da156cbbb8/nfon-solutions-industries.svg) Solutions](#) Industries + [Health & Wellness](/en/solutions/health-wellness) + [Retail & E-Commerce](/en/solutions/retail) + [Finance & Legal](/en/solutions/finance-insurance) + [Travel & Hospitality](/en/solutions/hospitality) + [Public Sector](/en/solutions/public-sector) + [Energy](/en/solutions/energy) Success stories + [Customer Stories](/en/customer-stories/) * [![Partnerships](https://a.storyblok.com/f/290788/36x36/7bd105c67d/nfon-partner.svg) Partnerships](#) Partner with NFON + [Become a partner](/en/partner/become-partner) + [NGAGE](/en/partner/partner-programme) Partner Portal + [Partner Portal](https://partners.nfon.com/) * [![Help Centre](https://a.storyblok.com/f/290788/40x40/d01fbb4f30/help-nfon.svg) Help Centre](/en/help-center) * [Login](https://start.cloudya.com/ "Login") * International + [International](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/gateways) + [Deutschland](/de/los-gehts/cloud-telephonie/lexikon/knowledgebase-detail/gateways) + [España](/es) + [France](/fr) + [Italia](/it) + [Österreich](/at) + [Polska](/pl) + [Portugal](/pt) + [United Kingdom](/gb) [![NFON Logo](/assets/logo-nfon.svg)](/en/ "NFON Home") * [Products](#) ![](/web-assets/f/290788/36x36/a9f3ceed6f/nfon-call-work.svg) Call & Work ![AI icon](/assets/ai_icon.webp) Seamless communication ![](/web-assets/f/290788/36x36/d03c61cf40/nfon-build-automate.svg) Build & Automate ![AI icon](/assets/ai_icon.webp) AI Automation ![](/web-assets/f/290788/36x36/106823b73b/nfon-engage-support.svg) Engage & Support ![AI icon](/assets/ai_icon.webp) Omnichannel support ![](/web-assets/f/290788/36x36/50b60f5411/nfon-integrations-add-ons.svg) Integrations & Add ons Connect Teams & CRMs + [![](/images/products-call-work-cloudteleophny-navbar-int_Fjf8b.webp) ### Cloud Telephony ![AI icon](/assets/ai_icon.webp) Seamless cloud telephony for every device. High-fidelity audio with European-grade security.](/en/products/cloud-telephony/) + [![](/images/products-call-work-siptrunk-navbar-int_ZH5NzW.webp) ### SIP Trunk Secure cloud connectivity for your existing hardware. Scales instantly with your business.](/en/products/enablement/) + [![](/images/products-call-work-devices-navbar-int_Z2dP6.webp) ### Devices Professional telephones and hardware designed for clear calls and all-day comfort.](/en/products/devices) + [![](/images/products-build-automate-assistants-navbar-int_2ghUIJ.webp) ### Assistants ![AI icon](/assets/ai_icon.webp) Pre-configured, plug-and-play digital roles like FrontDesk and Workdesk. Ready to deploy instantly with zero coding required.](/en/products/ai/assistants) + [![](/images/products-build-automate-bots-navbar-int_Z1p57Vm.webp) ### Bots ![AI icon](/assets/ai_icon.webp) Prompt-driven, multi-channel conversational experiences. Automate custom customer journeys across Web Chat, Voice, and Livechat.](/en/products/ai/bots) + [![A chatbot creation interface is shown with a readiness message, build report, agent prompt details, and created tools list, over a gradient background.](/images/products-build-agent-studio-navbar-int_Z1Y88dE.webp) ### AI Agent Studio ![AI icon](/assets/ai_icon.webp) Simply turn your ideas into AI agents for your business. Describe the task, create a working agent, then optimize it in one workspace.](/en/products/ai/agent-studio) + [![](/images/products-engage-support-navbar-int_1xyFBE.webp) ### Contact Center ![AI icon](/assets/ai_icon.webp) Omnichannel customer service for modern teams. Manage conversations, automation, AI assistance, and customer context.](/en/products/customer-contact/) + [![](/images/products-integrations-addons-navbar-int_Z1Ka5ea.webp) ### Integrations & Add ons Expand your capabilities and natively connect your everyday business to keep all workflows unified.](/en/integrations/) * [Solutions](#) ![](/web-assets/f/290788/40x40/da156cbbb8/nfon-solutions-industries.svg) Industries Tailored solutions ![](/web-assets/f/290788/40x40/155f2a989d/nfon-success.svg) Success stories 54,000+ trust us + [![](/images/solutions-health-wellness-navbar-int_Z15q3kJ.webp) ### Health & Wellness Secure communication for better patient experiences and care delivery.](/en/solutions/health-wellness) + [![](/images/solutions-retail-ecommerce-navbar-int_zUgjw.webp) ### Retail & E-Commerce Connected communication for modern retail and customer engagement.](/en/solutions/retail) + [![](/images/solutions-finance-legal-navbar-int_1Dy5Ax.webp) ### Finance & Legal Trusted communication for regulated and security-conscious organizations.](/en/solutions/finance-insurance) + [![](/images/solutions-hospitality-travel-navbar-int_17WoBe.webp) ### Travel & Hospitality Seamless communication for exceptional guest experiences and service.](/en/solutions/hospitality) + [![](/images/solutions-publicsector-navbar-int_YyABB.webp) ### Public Sector Reliable communication for responsive public services and citizen support.](/en/solutions/public-sector) + [![](/images/solutions-energy-navbar_FDoix.webp) ### Energy Reliable communication for responsive customer service, even during outages and peak demand.](/en/solutions/energy) + [![](/images/solutions-costumerstroy-navbar-int_Z1MdOsM.webp) ### Customer Stories Real-world impact across every industry. Explore how we solve complex communication challenges for Europe’s leading brands.](/en/customer-stories/) * [Partnerships](#) ![](/web-assets/f/290788/36x36/7bd105c67d/nfon-partner.svg) Partner with NFON Join the NFON network ![](/web-assets/f/290788/36x36/8c5c9a9c78/nfon-partner-portal.svg) Partner Portal Existing partner login + [![](/images/partnerships-partner-navbar-int_ZHYGKx.webp) ### Become a partner From onboarding to co-branded marketing, we provide the tools you need to win.](/en/partner/become-partner) + [![](/images/partnerships-ngage-navbar-int_Zs3yY9.webp) ### NGAGE Discover our tiered rewards system designed to help you scale your business and revenue.](/en/partner/partner-programme) + [![](/images/partnerships-partnerportal-navbar-int_2ki451.webp) ### Partner Portal Access partner tools, deal registration, training resources, and program benefits in one place.](https://partners.nfon.com/) * [Help Centre](/en/help-center) * Search * [Login](https://start.cloudya.com/ "Login") * en + [International](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/gateways) + [Deutschland](/de/los-gehts/cloud-telephonie/lexikon/knowledgebase-detail/gateways) + [España](/es) + [France](/fr) + [Italia](/it) + [Österreich](/at) + [Polska](/pl) + [Portugal](/pt) + [United Kingdom](/gb) * [Contact](#) [Contact](# "Contact") + ![](/web-assets/f/290788/40x40/d98615a3ea/nfon-sales-contact.svg) Sales & General Get in touch with us. ![](/images/getstarted-talktosales-navbar-int_ZMspQ4.webp) ### Talk to Sales Get a free consultation to see how NFON products can meet your needs. [+49 8000 – 63 66 24](tel:+498000636624 "+49 8000 – 63 66 24
") ![](/images/getstarted-writetous-navbar-int_ZY7MOf.webp) ### Write to us Fill out our request form. Our experts will respond as soon as possible. [Write to us](/en/request-information "Write to us") ### Gateways [How does a gateway work?](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/gateways#85ff41e09034) [Gateways in Voice-over-IP telephony](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/gateways#974f23d8fa6c) [What types of VoIP gateway devices are available?](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/gateways#81544e0212c4) [When should you use a Voice-over IP gateway?](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/gateways#d3e9b29ad49f) [Factors that influence the price](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/gateways#35a26f8bc229) [How does a gateway work?](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/gateways#85ff41e09034) ### How does a gateway work? In information and communication technology, gateways are able to translate or transform protocols, allowing different applications or networks to communicate. For example, a gateway can translate the IPX/SPX protocol by Novell into Internet Protocol or vice versa. Information may possibly also be lost in the process if not equally supported or transportable by the different protocols. Another example of a gateway is a system which translates e-mails into SMS and vice versa. Gateways are enabled on all seven layers or only individual layers of the OSI seven layer model. In addition to protocol conversion gateways, there also are gateways which convert different types of media. Gateways are often used to bridge different networks. ### Gateways in Voice-over-IP telephony A gateway can establish a connection between a circuit-switched network such as an **[ISDN](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/isdn)** network and a packet-switched network such as the IP network. The so-called **[VoIP](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/voice-over-ip)** gateway is a device or a system which bridges the classic analogue or digital telephone and IP telephony. This type of gateway can for example be used to connect a conventional Telephone system to your ISDN interface. The gateway converts the ISDN protocol to Session Initiation Protocol (**[SIP](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/sip)**) and transmits the signals using the IP interface. This function allows for soft migration into the world of IP telephony. The existing telephone system can easily be used with a new IP-based connection and later replaced with an IP-capable system. When utilizing the services of a **[cloud telephone system](/en/products/cloud-telephony/cloudya)**, the conventional system can be used until cloud telephony is implemented and then disconnected. To ensure the smoothest possible migration to IP telephony, many internet access routers already feature extensive VoIP gateway functions. Existing telephone systems or telephones can be connected directly to these routers and still be used. ### What types of VoIP gateway devices are available? A VoIP gateway device acts as the connecting point between traditional telephony and modern IP networks. Models vary from analogue VoIP gateways, which convert signals from analogue phones or fax machines into VoIP packets, to digital and hybrid versions supporting ISDN or PRI lines. This flexibility allows organisations to integrate existing hardware into IP-based infrastructures, enabling a gradual migration without interrupting daily communication. ### When should you use a Voice-over IP gateway? A gateway for VoIP is most beneficial in scenarios where a complete switch to IP telephony is not immediately possible. Businesses with large investments in analogue phones, fax machines, or legacy PBX systems can continue using them while gradually implementing cloud-based or IP-based communication. It also plays a key role when connecting remote sites or branch offices to a central VoIP infrastructure without replacing all hardware. For organisations operating in regions with limited broadband capacity, the gateway can optimise bandwidth usage and ensure consistent voice quality. Ultimately, it offers a strategic bridge during the migration process. ### Factors that influence the price The VoIP gateway price depends on several factors: the number of supported channels, whether the device handles analogue, digital, or mixed connections. Additional features such as encryption or integrated routing can further increase the cost. Entry-level models for small offices are relatively affordable, while enterprise-grade gateways with high port density and redundancy features command a higher investment. ### Related Articles ### Session Initiation Protocol (SIP) [Session Initiation Protocol (SIP)](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/sip) ### Integrated Services Digital Network (ISDN) [Integrated Services Digital Network (ISDN)](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/isdn) [Back](#) ![NFON Logo](/assets/logo-nfon.svg) News * [Events](https://www.nfon.com/en/news/events) * [Press](https://corporate.nfon.com/en/communication/) Customers * [Cloudya Login](https://start.cloudya.com/auth/login) * [Admin Portal](https://admin.nfon.com/) * [NFON Status](https://status.nfon.com/) About NFON * [Corporate](https://corporate.nfon.com/en/) * [Investor Relations](https://corporate.nfon.com/en/investor-relations/ir-at-a-glance/) * [Sustainability & ESG](https://corporate.nfon.com/en/sustainability/) * [Career](https://corporate.nfon.com/en/careers/) Legal * [GTC-SLA](/en/legal/gtc-sla) * [Legal Notice](/en/legal/legal-notice) * [Trust Center](https://www.nfon.com/en/trust-center/) * [Data Protection](/en/legal/data-protection) * [Cookie Settings](javascript:onclick=UC_UI.showSecondLayer()) © 2026 - NFON | All rights reserved.