Yeastar TG400L gateway/controller 10, 100 Mbit/s
Yeastar

Highlights

Die Yeastar TG-Serie verbindet GSM/3G/4G-Netzwerke direkt mit VoIP-Netzwerken und ermöglicht eine bidirektionale Kommunikation: GSM/3G/4G mit VoIP und VoIP mit GSM/3G/4G. Die TG-Serie ist die beste erhältliche Lösung, um IP-basierte Telefonanlagen miteinander zu verbinden und bietet eine Softswitch-Anbindung an ein GSM/3G4G-Netzwerk. Darüber ist sie die beste Fallback-Lösung, wenn der Festnetzanschluss ausfällt.

• Telefonanlage-Systeme mit GSM- oder 3G-WCDMA- oder 4G-LTE Net
  
  The Yeastar LTE/4G-Gateway TG400L 4x Channel is a professional-grade mobile connectivity gateway designed to integrate LTE/4G networks with IP-based telephony and data infrastructures. With support for up to four LTE/4G channels (SIM-based mobile lines) in one compact device, it enables businesses to route voice traffic over mobile networks, build redundancy for fixed-line connections, and expand communication capacities flexibly and cost-effectively. Typical usage scenarios include connecting a VoIP/IPPBX system to the mobile network, providing backup connectivity if fixed lines fail, or enabling cost-optimized mobile trunking for outgoing and incoming calls.
  
  Technically, the TG400L series is part of Yeastar's gateway family and is designed for interoperability with common SIP-based PBX and VoIP platforms. The device generally offers:
  - Up to 4 LTE/4G channels for parallel calls over mobile networks (via SIM cards, depending on local providers and tariffs).
  - VoIP/SIP connectivity, allowing registration to IP PBX, softswitches or hosted telephony platforms.
  - Standard telephony functions on the gateway level, such as call routing rules, caller ID handling and flexible mapping between SIP accounts and mobile channels.
  - Web-based administration for configuration, monitoring, firmware updates and diagnostics.
  Because concrete, model-specific values (e.g. frequency bands, exact interface types, power consumption) can vary by region and hardware revision, these should be checked in the official Yeastar datasheet for the TG400L.
  
  In practice, the TG400L 4x Channel is used wherever mobile and IP telephony must be combined. Companies can, for example, route calls from their IP PBX to the mobile network to benefit from mobile flat rates or special tariffs. In areas with insufficient fixed-line infrastructure, the device allows telephony services via LTE/4G as the primary or backup line. It also supports distributed branches or temporary work sites (construction sites, events, pop-up offices) that require quickly deployable voice services without waiting for fixed-line installations. Thanks to multiple channels, several concurrent calls are possible, ensuring business-grade availability.
  
  Key advantages for customers include higher flexibility in connectivity planning, potential cost savings through targeted use of mobile tariffs, and increased resilience: if the fixed-line internet or SIP trunk fails, the LTE/4G gateway can take over as an alternative path for telephony. In combination with an existing IP PBX--especially Yeastar PBX systems--the integration is typically straightforward, with central administration and unified dialing plans. The compact form factor and intuitive configuration reduce deployment times and technical complexity for installers and IT departments.
  
  Yeastar is an established manufacturer of communication solutions focusing on IP PBX systems, VoIP gateways and unified communications for small and medium-sized enterprises. The company places emphasis on reliability, interoperability and ease of use, offering scalable platforms and gateways for a wide range of communication scenarios. Publicly available information shows that Yeastar invests in modern, software-centric communication architectures that help extend the service life of existing systems and reduce the need for frequent hardware replacements when requirements change.
  
  By using a device such as the LTE/4G-Gateway TG400L 4x Channel, customers can contribute positively in several ways: leveraging modern IP and mobile technologies allows more efficient use of existing network resources and can reduce the need for separate, parallel infrastructures. Centralized, software-based management often extends the operational life of telephony solutions, which can help avoid unnecessary hardware turnover. Although precise sustainability or environmental protection measures specific to this model are not explicitly documented, Yeastar's focus on IP-based, software-driven communication solutions inherently supports more sustainable IT strategies: companies can adapt and expand systems mainly via configuration and software updates instead of complete system replacements. Customers who choose such solutions thus support a path toward more resource-efficient communication infrastructures and long-term, future-proof investments.