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VGW-420FS The VGW-420FS provides the essential features you need for business-class voice communications in an easy-to-manage solution. Designed for businesses with branch offices, it helps the enterprises to save money on long-distance calls. PLANET VGW-420FS 4-port FXS SIP VoIP Gateway is a fully IETF SIP RFC3261 standard compliant residential gateway...

802.3af PoE SIP Analog Telephone Adapter ATA VIP-156PE This model has been discontinued. New model VGW-420FS is available