The Cisco VG200 Voice-over-IP (VoIP) Gateway is a next-generation voice-conversion device that provides powerful interoperability and advanced features in an affordable package taking advantage of Cisco AVVID (Architecture for Voice, Video and Integrated Data). It is used to connect a Cisco IP Telephony Solutions network to traditional telephone trunks or analog devices. These telephone trunks may be connected to the Public Switched Telephone Network (PSTN) or existing private branch exchange (PBX) systems. Analog devices include legacy telephones, fax machines, and voice conference units. On the user side, the Cisco VG200 provides an auto-sensing 10/100 Ethernet port. Internally, the Cisco VG200 is equipped with digital signal processors (DSPs) that convert analog and digital voice into IP packets for transport through the IP network using standard coders/decoders (codecs), including G.711, G.723.1, G.729(a), and others.