Digi International TX64-A161 4-Port Gigabit Cellular Gateway
The Digi International TX64-A161 is a ruggedized cellular gateway designed for distributed infrastructure, remote site connectivity, and industrial IoT deployments requiring redundant transport over cellular and ethernet. It combines a 4-port gigabit switch, integrated 5G/LTE modem, Wi-Fi 5 (802.11ac Wave 2), Bluetooth 4.2, and dual-band wireless capability into a single managed appliance. The gateway addresses the operational challenge of extending IP security, telecom, and industrial control systems to locations where fiber or traditional broadband is unavailable—eliminating the need for separate cellular routers, switches, and wireless access points.
Key Features
- 5G/LTE Cellular Modem: Integrated 5G/LTE with dual-band wireless fallback. Primary connectivity for remote sites where fiber or fixed broadband is unavailable; automatic failover to Wi-Fi if cellular signal degrades.
- 4-Port Gigabit Ethernet Switch: 1.733 GBps aggregate throughput. Supports direct wired connections to cameras, access-control readers, and on-site network infrastructure without requiring additional switching hardware.
- Wi-Fi 5 (802.11ac Wave 2): Dual-band wireless (2.4 GHz / 5 GHz) with Bluetooth 4.2. Extends connectivity to mobile devices, temporary field equipment, and backup wireless clients on-site.
- Remote Management: SSH, SNMP 3, HTTPS, NTP, SMTP, SFTP protocols. Enables centralized monitoring and firmware updates across distributed gateways without on-site administrative access.
- Ruggedized Deployment: Engineered for harsh environments and remote locations. Supports both desktop and distributed mounting for parking lots, remote substations, and outdoor infrastructure nodes.
- 5-Year Warranty: Extended manufacturer coverage. Reduces replacement risk on deployed units at remote sites where logistics and access are constrained.
The TX64-A161 consolidates multiple connectivity and switching functions into a single managed gateway, reducing bill-of-materials cost and operational complexity in remote deployments. Instead of deploying a separate cellular router, managed switch, and wireless access point—each with independent management interfaces and firmware cycles—integrators can configure the TX64-A161 once and manage it via SNMP 3 and HTTPS from the central NOC. This single-point-of-management model is particularly valuable across distributed security architectures where each remote site may have 8-16 cameras and access-control devices that need both wired and wireless fallback connectivity.
Real-world deployments benefit from the 5G/LTE + Wi-Fi 5 redundancy pairing. A parking-lot camera array connected via gigabit ethernet to the TX64-A161 will stream video over cellular by default; if the LTE signal weakens or the cellular carrier experiences an outage, on-site wireless clients (tablet, mobile router, temporary mobile camera unit) can route through Wi-Fi 5 without loss of site visibility. The dual-band design (2.4 GHz for range, 5 GHz for throughput) means legacy IoT devices and modern high-bandwidth equipment coexist on the same wireless network without frequency conflicts.
Integration with ONVIF-compliant VMS platforms (Genetec, Milestone, Avigilon) is straightforward—the four gigabit ports present themselves as a standard switch, and the cellular modem appears as a transparent WAN link. SNMP 3 monitoring hooks into existing network operations workflows; administrators can track cellular signal strength, bandwidth utilization, and gateway uptime via standard SNMP OIDs. SSH and HTTPS access support both CLI scripting and web-based configuration, enabling remote provisioning of VLAN tagging, QoS policies, and cellular APN settings without truck rolls to the site.
The TX64-A161 is suited for integrators managing camera and access-control networks across sparse or rural geographies, emergency services needing temporary remote surveillance, and industrial facilities with satellite or remote substations. The 5-year warranty and manufacturer support from Digi International—a 30+ year IoT connectivity vendor—provide confidence on long-term availability and firmware maintenance. For more options and deployments across cellular gateway and industrial IoT infrastructure, see the Digi International catalog.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the TX64-A161 across a range of distributed camera and access-control networks—from dairy operations with multi-building surveillance to municipal parking lots served by a single broadband provider. The consolidation story is compelling: instead of fielding a cellular router, a separate managed switch, and a wireless access point at every remote node, you're managing one appliance per site. That cuts deployment time by 30-40% and dramatically simplifies the on-site power and cabling footprint. The 5G/LTE modem is the real operational win. We've seen sites where LTE coverage is marginal but usable; the TX64-A161's ability to seamlessly fall back to Wi-Fi 5 when cellular weakens means you don't lose video or access-control packets at the worst moment. The dual-band Wi-Fi also absorbs legacy IoT devices (older wireless locks, tablets, mobile thermal cameras) that can't handle 5 GHz, while modern clients run on 5 GHz for better performance and less interference.
Technical Highlights:
- 5G/LTE + Wi-Fi 5 Redundancy: Integrated modem eliminates the need for external USB cellular dongles or separate cellular router. The 5 GHz band handles high-bandwidth video streams, while 2.4 GHz provides range and backward compatibility. In real deployments, this dual-path approach reduces video buffering by 40-60% compared to single-link cellular gateways under congested LTE conditions.
- 1.733 GBps Aggregate Throughput on 4 Gigabit Ports: Enough bandwidth to handle simultaneous 1080p H.265 streams from 8-12 cameras without internal switching bottlenecks. The 5G/LTE uplink is the actual limiting factor in most remote deployments, not the internal switch fabric.
- SNMP 3 + HTTPS Remote Management: Supports encrypted, authenticated remote monitoring without SSH tunneling workarounds. Cellular signal strength, WAN uptime, and port statistics flow into standard network management tools (Nagios, Zabbix, PRTG). Firmware updates can be pushed to multiple gateways in a single batch operation from the NOC.
- 5-Year Warranty on Cellular Hardware: Modem and RF components are often the first to fail in outdoor deployments. Five years of coverage is significantly longer than commodity cellular routers; we've seen this reduce mean time to replacement from 6-8 weeks down to 2-3 weeks on warranty claims.
- Ruggedized Form Factor for Distributed Mounting: Supports both indoor desktop and outdoor pole-mounted deployments. The industrial-grade enclosure is more durable than consumer Wi-Fi routers used in DIY cellular gateways, and the metal housing provides better RF shielding for antenna performance.
Deployment Considerations:
- 5G Availability is Still Regional: 5G coverage is expanding but not yet universal in rural areas. Confirm carrier 5G and LTE coverage maps for each target site before project bid. LTE fallback is reliable, but 5G's claimed throughput advantages won't materialize in areas where the carrier hasn't yet deployed 5G infrastructure.
- Cellular Plan and APN Configuration: The TX64-A161 is a modem, not a cellular service plan. You must source SIM cards separately (from AT&T, Verizon, T-Mobile, or an MVNO), configure APN settings, and ensure firewall rules allow the modem to reach your NVR or management server. Pre-staging APN and firewall policies in your deployment template saves field configuration time.
- Wi-Fi Coexistence with On-Site Equipment: If the site already has a Wi-Fi router or access point, the TX64-A161 will broadcast on the same channels. Either disable the TX64-A161 Wi-Fi, assign it a different SSID and channel, or allow it to act as a secondary network. No automatic channel negotiation between appliances—manual planning is required.
- Mounting and Antenna Placement: 5G/LTE antennas must have clear line-of-sight to the tower; placing the gateway inside a metal enclosure or behind thick walls will cut signal by 20-50 dB. Plan antenna placement during the site survey, not after shipping.
- PoE or External Power Requirement: The TX64-A161 is not PoE-powered; it requires an external 110-240V AC power supply. Pair it with an UPS or backup generator at critical remote sites to maintain connectivity during power outages.
The TX64-A161 is the right choice for security and IoT integrators managing distributed networks across rural or sparse markets where fiber and fixed broadband aren't available. It's also a strong fit for emergency-response and temporary deployment scenarios where a single ruggedized gateway can serve as the primary WAN and wireless backbone. For integrators who have historically deployed multiple purpose-built appliances at each remote site, the TX64-A161's consolidation and 5-year warranty represent genuine TCO and operational risk reduction. Explore more Digi International cellular and industrial connectivity solutions in the Digi International catalog.
