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.The Cisco VG200 can provide transcoding and conferencing services for branch offices by adding a DSP farm module. The DSP farm module is equipped with one to five DSP single in-line memory modules (SIMMs). Each SIMM contains three DSPs. Each DSP can support either 4 transcoding sessions or 1 conference call containing up to six parties. The maximum number of transcoding sessions supported by a five-SIMM configuration is 60 transcoding sessions. The maximum number of conference calls supported by a five-SIMM configuration is 15 conference calls.