The antek VSP-5004 is an VoIP gateway with two modules supporting 4 phone/line ports. In the data network specific function parts, the VSP-5004 provides NAT (Network Address Translation) and Bandwidth Control functions to let local network users connect to Internet using only one fixed/dynamic IP address. In the voice network specific function parts, the VSP-5004 provides standard H.323 and SIP VoIP gateway function to let phone sets connect to the VoIP world transparently. The VSP-5004 can route voice calls to PSTN or VoIP network. It seamlessly integrates PSTN, Internet and VoIP services and guarantees the Quality of Service.

Network Plug & Play
Not necessary to change the network setting of your computer devices in LAN by using the Network-Plug & Play feature of VSP-5004.

Voice over IP
VSP-5004 supports both G.723.1A & G729AB Codec and echo cancellation and achieves best quality & efficiencies, also complying
with other H.323 products, such as Cisco, OKI, Lucent, Net-meeting,...


H.323 & NAT
This feature allows private network devices, including the H323, to connect to Internet using single public IP address. It supports virtual server ,DMZ, packets-filtering and DHCP-server functions.


VPN Pass through Supported
This pass-through feature allows you to establish a PPTP or IPSec VPN connection. By using a PPTP or IPSec client on your computer, a connection to the corporate PPTP or IPSec server can be done.

Built-in 4-ports Ethernet switch Hub
With the built-in 4 ports Ethernet switch hub, the VSP-5004 can let up to 4 PCs connect to Internet without needing additional hub device.

Quality of Service for VoIP and data services
VSP-5004 solves the QoS problem of VoIP and data services by the built in traffic shaping and bandwidth control functions, according to various shaping policies, such as IP address range, application types, priority, etc.