GSM Gateway, Yeastar-TG400, 4-Cchannels VoIP GSM gateway for IP to GSM or GSM to IP Converter

Cisco Nexus 7000 3.0-kW and 6.0-kW DC Power Supply Modules offer features that are designed to make operation of a DC environment simpler and reduce operating costs through common sparing, hot-swappable features, and higher efficiency. The Cisco Nexus 7000 Series also supports multiple power redundancy schemes, mixed-mode AC and DC operations, and real-time power information. The following list presents the main features:

Common power supply across the Cisco Nexus 7000 9-, 10-, and 18-Slot Switches and Cisco Nexus 7000 Series systems for common sparing flexibility (6.0-kW DC power supply only)

Efficiency greater than 91 percent, reducing power losses from conversion

Hot-swappable power supplies for upgrades or maintenance with no service disruption

Mixed-mode AC and DC operation, enabling migration without disruption and providing support for dual environments with unreliable AC power, with battery backup capability

Equally sized, multiple inputs, reducing fusing requirements and maintaining a consistent supply wire gauge for all output configurations, avoiding the need for costly upgrades.

Professional customer service:

Purchase protection:

Yeastar TG400 UMTS/WCDMA is a gateway connecting UMTS/WCDMA network to VoIP network directly and can support two-way communication. It is the best UMTS/WCDMA trunking solution for IP-based telephone systems, the best fallback solution in case of landlines outages, and also the best alternative for areas with limited landline or SIP connection.

Number of GSM channels (Max): 1 (Quad-Band GSM/GPRS850/900/1800/1900MHz; Support external antenna)
Mobile : 4 x GSM/CDMA/UMTS Channel
GSM Frequency: 850/900/1800/1900 MHz
UMTS Frequency : 850/1900 MHz, 850/2100 MHz, 900/2100 MHz
Protocol: SIP, IAX2, Transport: UDP, TCP, TLS, SRTP
Voice Codec: G.711 (alaw/ulaw), G.722, G.726, G.729A, GSM, ADPCM, Speex
Echo Cancellation: ITU-T G.168 LEC
DTMF Mode: RFC2833, SIP INFO, In-band
Calling Type: Termination (VoIP to GSM/CDMA/UMTS), Origination (GSM/CDMA/UMTS to VoIP)
LAN: 1 x 10/100Base-T Ethernet
Network Protocol: FTP, TFTP, HTTP, HTTPS, SSH
NAT Traversal: Static NAT, STUN
Network: DHCP, DDNS, Firewall, OpenVPN, Static IP, QoS, Static Route, VLAN
Power Supply: AC 100-240V

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