The DVG-3004S SIP Analog Trunk Gateway is an ideal solution for converging your business phone requirements to next generation communication services and can be used for different purposes. The product includes an advanced QoS engine, which sets voice data packets with higher priority. In addition to Layer 3 IP TOS QoS, it also offers IEEE 802.1Q compliance for Layer 2 VLAN segmentation. Both traffic management mechanisms improve call quality and reliability. Both can be tuned to fit your data network. The DVG-3004S is hardened against network attacks with its built-in packet inspection engine. Access to its phone services is securely handled by SIP standard challenge-response authentication.
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