VoIP to GSM and 4G cellular gateways provide a simple and cost-effective way to connect SIP-based communication systems with mobile networks. They help businesses extend the life of their existing infrastructure, reduce call costs, and improve resilience without the need for major system upgrades.
These gateways allow IP phone systems, standalone SIP phones, IP alarm systems, and IP intercom stations to make and receive calls over 4G and cellular networks. This creates a flexible communication environment that combines the benefits of VoIP with the wide coverage and reliability of mobile connectivity.
Whether you need a backup path for business continuity, a communication solution for a remote site, or an easy way to integrate cellular calling into your VoIP network, VoIP to 4G gateways offer a practical and scalable solution.
Key Benefits of VoIP to 4G Gateways
Lower Call Costs : Route calls through GSM or 4G cellular networks to reduce call charges, especially for mobile-to-mobile traffic and regional deployments.
Easy SIP Integration : VoIP to cellular gateways work seamlessly with IP PBX systems, SIP phones, IP intercoms, and other SIP-enabled devices, making integration straightforward.
Reliable Backup Communication : If fixed-line or internet-based voice services fail, the cellular gateway can provide an alternative communication path to keep critical calls running.
Fast Deployment : These solutions can be installed quickly without extensive cabling or infrastructure upgrades, making them ideal for both permanent and temporary sites.
Ideal for Remote Locations : For locations where NBN, PSTN, or fixed-line services are limited or unavailable, 4G gateways deliver dependable voice connectivity over the mobile network.
Typical Applications
IP PBX Backup Routing : Provide a failover voice path for business phone systems when landlines or SIP trunks are unavailable.
IP Alarm Connectivity : Connect alarm panels and emergency communication systems to reliable cellular networks for added security and continuity.
SIP Intercom and Help Point Integration : Allow IP intercoms, lift intercoms, emergency phones, and help points to place and receive calls over the mobile network.
Temporary and Regional Sites : Deploy standalone voice services at construction sites, temporary offices, remote facilities, and other locations where fixed-line infrastructure is not practical.
VoIP to 4G Gateways provide a smart, cost-effective way to modernise communications—combining the power of IP with the reach and resilience of cellular networks.
Showing all 7 results
Milesight UR32L 4G LTE Router with PoE Ethernet Port
- Global 4G LTE CAT4/3G network with multiple carrier networks
- Automated failover/failback between Ethernet and cellular
- NXP industrial grade processor
- Rugged enclosure with IP30 protection for harsh environment
- DIN rail or shelf mounting
- Supports PoE on Ethernet port for powering PoE devices
- Supports remote monitor & management via remote management platform
- Supports access control lists, DMZ, DDoS Protection, Filters, SPI firewalls
- Support wide operating temperature ranging from -40°C to +70°C/-40℉ to +158℉
Milesight UR35 4G LTE Industrial Router with Wi-Fi, 4 x PoE
- Hardened & Rugged Enclosure
- 4 PoE PSE Ethernet Ports
- Supports Wi-Fi Client and AP Mode
- 1 RS232 and 1 RS485 Serial Port
- 1 Digital Input and 1 Digital Output
- OpenVPN/IPsec/PPTP/L2TP/DMVPN/GRE
- Wide Operating Temp Range and Input Voltage
Milesight UR51- 3G/4G LTE ROUTER WITH POE, Wi-Fi, GPS Option
- Dual SIM Backup with High-Speed LTE Network
- Ethernet PoE Port option – Supports More Flexible Applications
- Integrated GPS with High Accuracy Positioning
- Supports Modbus TCP and Modbus RTU Protocols
- Multiple Encryption Tunnels for Data Transmission Security
Neos 4G Lift Intercom / Phone Gateway Kit to replace Landline
- PSTN Replacement for NBN installations
- 3G/4G Elevator Voice Gateway
- Supports all carriers – 800/850/900/1900/2100 Mhz
- Ideal for PBX, Elevator Phones and Alarm Systems
- Optional Battery backup for up to 8+ Hours
- Includes wall mounting bracket
- Supplied with magnetic base antenna with 3 metre lead for best signal placement.
- Intercom line supports 48v DC & 90v AC ring (OK for wired distance up to 5KMs)
- Compliant with Australian Standards
TG 400 – 4G LTE Cellular VOIP Gateway
4G Connectivity for Phone and Intercom Systems
- Link up PBX Systems or SIP devices to 3G /4G LTE Networks
- Works as a cost effective backup when wired network goes down
- Supports Sending and Recieving of bulk SMS messages
- Easy Installation and web based management
- Available in 2, 4, 8 and 16 channel versions.
Price quoted below is for 4 channel model, please contact us for pricing for other versions.
TG 800 – 4G LTE Cellular VOIP Gateway
4G Connectivity for Phone and Intercom Systems
- Link up PBX Systems or SIP devices to 3G /4G LTE Networks
- Works as a cost effective backup when wired network goes down
- Supports Sending and Recieving of bulk SMS messages
- Easy Installation and web based management
- Available in 2, 4, 8 and 16 channel versions.
Yeastar TG200 4G LTE VOIP Gateway – 2 Channel
4G Connectivity for Phone and Intercom Systems
- Link up PBX Systems or SIP devices to 3G /4G LTE Networks
- Works as a cost effective backup when wired network goes down
- Supports Sending and Recieving of bulk SMS messages
- Easy Installation and web based management
- Available in 2, 4, 8 and 16 channel versions.
Price quoted below is for 2 channel model, please contact us for pricing for other versions.






