DESC: Product Features: Interface: Expansion Slot; Enclosure: Internal; ISDN Terminal Interface: BRI, PRI; Type: Modem; Analog Modulation Protocol: Bell 103, Bell 212A, ITU V.21, ITU V.22, ITU V.22bis, ITU V.23, ITU V.32, ITU V.32bis, ITU V.90, K56Flex; Supported ISDN: ISDN BRI, ISDN PRI; Data / Fax / Voice Compression: ITU V.42bis, MNP-5; Error Correction Protocol: ITU V.42 (LAPM), MNP-2, MNP-3, MNP-4; Depth: 7.1 in.; Height: 1.5 in.; Width: 7.2 in.; Weight: 2.2 lb.; Package Qty.: 1