{"product_id":"patton-sn4741a-smartnode-voip-gateway-16-fxo-ports-via-rj21-50pin-16-voip-calls-dual-gigabit-ethernet-sn4741a-16jo16v-rj21-eui","title":"Patton SN4741A SmartNode VoIP Gateway – 16 FXO Ports via RJ21-50pin, 16 VoIP Calls, Dual Gigabit Ethernet (SN4741A\/16JO16V\/RJ21\/EUI)","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003cp\u003eMany organizations still depend on analog PSTN trunk lines but want to connect them cleanly and efficiently to modern SIP-based phone systems or unified communications platforms. The Patton SN4741A SmartNode VoIP Gateway with RJ21 connector solves this by delivering 16 FXO ports through a single 50-pin RJ21 (Amphenol) interface. This design consolidates all trunk connections into one cable, dramatically simplifying rack cable management and installation in professional environments. The gateway supports 16 simultaneous VoIP calls from day one and offers a straightforward upgrade path to full eSBC capabilities with up to 200 SIP sessions. Dual Gigabit Ethernet ports ensure reliable, high-quality voice transport, while external AC power with optional redundancy supports business-critical uptime. Whether you are maintaining existing PSTN numbers, adding local breakout alongside SIP trunks, or managing a hybrid environment, the RJ21 variant provides a neat, scalable, and enterprise-ready solution for facilities that value organized cabling.\u003c\/p\u003e\n\n  \u003ch2\u003eThe Telecom Spot Take\u003c\/h2\u003e\n  \u003cp\u003eOur customers who manage larger multi-line installations, telco closets, or enterprise racks often prefer the RJ21 connector version because it replaces 16 individual cables with one consolidated multi-pair cable. This reduces clutter, improves airflow, and speeds up installation and troubleshooting in dense environments. Like the rest of the SN4740 series, the SN4741A starts with 16 FXO ports and 16 VoIP calls but can be upgraded later to eSBC mode for significantly higher SIP capacity and advanced security features—protecting your hardware investment as needs grow. Patton’s focus on reliable analog signaling and interoperability makes this gateway a practical choice for IT directors and facilities managers who need dependable PSTN-to-SIP connectivity without sacrificing rack organization or future flexibility.\u003c\/p\u003e\n\n  \u003ch2\u003eKey Features\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e16 FXO ports via single RJ21 50-pin connector\u003c\/strong\u003e — Consolidates all analog PSTN trunk connections into one cable for cleaner rack management, reduced cable clutter, and faster installation in professional telco or enterprise environments.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e16 concurrent VoIP calls out of the box\u003c\/strong\u003e — Reliably handles moderate inbound and outbound call volumes across departments or sites.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUpgradeable to eSBC functionality (up to 200 SIP calls)\u003c\/strong\u003e — Future-proof your deployment by adding advanced session border controller features, higher capacity, and survivability without replacing the gateway.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDual Gigabit Ethernet ports\u003c\/strong\u003e — Provide robust, high-bandwidth network connectivity with support for QoS and flexible deployment options.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptional SIP-TLS\/SRTP security and transcoding (max 8 calls)\u003c\/strong\u003e — Enable encrypted signaling and media plus codec conversion resources when compliance or interoperability requirements arise.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFlexible power with optional redundancy\u003c\/strong\u003e — External 100–240 VAC power supply with the option to add a redundant supply for enhanced uptime in critical installations.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMultiple management options\u003c\/strong\u003e — Configure and monitor easily through the web interface, console port, or USB for file transfers and backups.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n  \n  \u003ch3\u003eAnalog Interfaces\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e16 × FXO ports via 1 × RJ21 (50-pin Amphenol\/Telco) connector\u003c\/li\u003e\n    \u003cli\u003e2-wire Loop Start signaling with programmable impedance\u003c\/li\u003e\n    \u003cli\u003eRing detection, tone detection, Caller ID reception, disconnect supervision\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eVoIP \u0026amp; Call Capacity\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBase: 16 simultaneous VoIP calls\u003c\/li\u003e\n    \u003cli\u003eUpgradeable to eSBC: up to 200 SIP calls\u003c\/li\u003e\n    \u003cli\u003eOptional transcoding: maximum 8 calls\u003c\/li\u003e\n    \u003cli\u003eT.38 fax relay support\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eNetwork Interfaces\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2 × 10\/100\/1000 Mbps Gigabit Ethernet ports\u003c\/li\u003e\n    \u003cli\u003eAuto-sensing with routing and QoS capabilities typical of the platform\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eManagement \u0026amp; Provisioning\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 × Console port\u003c\/li\u003e\n    \u003cli\u003e1 × USB port (configuration and file transfer)\u003c\/li\u003e\n    \u003cli\u003eWeb GUI and CLI access\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003ePower \u0026amp; Physical\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eSingle External Universal Input (EUI) power supply: 100–240 VAC\u003c\/li\u003e\n    \u003cli\u003eOptional redundant power supply available\u003c\/li\u003e\n    \u003cli\u003eCompact rack-mountable form factor (1U-class for 16–32 port configurations in the series)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eEnvironmental\u003c\/h3\u003e\n  \u003cp\u003eDesigned for enterprise and commercial environments (standard operating temperature and humidity ranges apply).\u003c\/p\u003e\n\n  \u003ch2\u003eComparison at a Glance\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVs. Patton SN4741A RJ11 version (same model, individual RJ11 ports)\u003c\/strong\u003e: The RJ21 variant uses a single 50-pin connector instead of 16 separate cables, delivering significantly cleaner rack cable management and faster installation in dense or professional cabling environments. The RJ11 version offers easier per-port access for frequent changes or troubleshooting.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVs. smaller Patton SmartNode 4140 series (up to 8 FXO ports)\u003c\/strong\u003e: This 16-port RJ21 model doubles capacity while adding consolidated cabling and a clear upgrade path to 200 SIP sessions and eSBC features that entry-level gateways typically lack.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eFAQ\u003c\/h2\u003e\n  \n  \u003ch3\u003eWhat is the main advantage of the RJ21 connector on this model?\u003c\/h3\u003e\n  \u003cp\u003eIt consolidates all 16 FXO ports into one 50-pin cable, reducing cable clutter, improving rack organization, and simplifying installation in telco closets or enterprise environments that use multi-pair cabling standards.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat is the primary job of the Patton SN4741A gateway?\u003c\/h3\u003e\n  \u003cp\u003eIt connects analog PSTN trunk lines from your telephone provider to SIP-based phone systems or UC platforms so you can keep using existing numbers and lines while gaining modern calling features.\u003c\/p\u003e\n\n  \u003ch3\u003eCan I use this with 3CX, Asterisk, or other SIP PBXs?\u003c\/h3\u003e\n  \u003cp\u003eYes. The SN4741A is built as a standards-based SIP gateway and integrates with popular SIP-compatible systems and hosted UC solutions.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat does “upgradeable to eSBC” actually give me?\u003c\/h3\u003e\n  \u003cp\u003eIt unlocks significantly higher SIP session capacity (up to 200 calls), plus advanced session border controller functions such as enhanced security, topology hiding, and automatic survivability for continued local calling if the primary network connection drops.\u003c\/p\u003e\n\n  \u003ch3\u003eIs redundant power supported?\u003c\/h3\u003e\n  \u003cp\u003eYes. The unit ships with a single external AC power supply and accepts an optional redundant power supply for higher uptime requirements.\u003c\/p\u003e\n\n  \u003ch3\u003eHow do I configure and manage the gateway?\u003c\/h3\u003e\n  \u003cp\u003eUse the built-in web interface for everyday tasks, the console port for CLI access, or the USB port to transfer configuration files and updates.\u003c\/p\u003e\n\n  \u003ch3\u003eDoes it handle fax calls?\u003c\/h3\u003e\n  \u003cp\u003eYes. T.38 fax relay is supported alongside voice calls for reliable document transmission over IP networks.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Patton Electronics","offers":[{"title":"Default Title","offer_id":46945290518665,"sku":"SN4741A\/16JO16V\/RJ21\/EUI","price":1844.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0338\/6245\/1337\/files\/SN4741A-16-R21.jpg?v=1781794565","url":"https:\/\/www.thetelecomspot.com\/products\/patton-sn4741a-smartnode-voip-gateway-16-fxo-ports-via-rj21-50pin-16-voip-calls-dual-gigabit-ethernet-sn4741a-16jo16v-rj21-eui","provider":"The Telecom Spot","version":"1.0","type":"link"}