HiRO H50113 V92 56K External USB Data Fax Dial Up Internet Modem Windows 10 8.1 8 7 Vista XP 32-bit 64-bit Latest V.92 Standard Protocol: Faster connection up to 56 Kbps; Less time to establish a connection; Can answer phone call during active connection Modem-On-Hold Feature: Receive phone call during active internet connection without termination Chipset: Lucent Modem Protocol: ITU-T V.92/K56Flex, ITU-T V.34bis, V.34, V.32bis, V.32, V.22bis, V.22, V.21, V.23 Bell 212A/103, V.80 Fax Compatibility: 14.4k bps Send/Receive, G3 Compatible Software Compatibility: AT Command Set Compatible Error Correction: MNP2-4, V.42 HiRO H50113 V92 56K External USB Data Fax Dial Up Internet Modem Windows 10 8.1 8 7 Vista XP 32-bit 64-bit. Recommended use with PhoneTray, CallClerk, CallStation, DoorKing and Many Others