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Introduction 9
Specifications
Hardware Features
• VHSI (Very High Speed Interface) port, supports V.24 and V.35 interfaces
• Ethernet 10BaseT RJ45 port
• AUX port (DB9 V.24 serial interface) (currently unsupported)
• Power jack
• Hard Reset button
• Indicators lights
• Flash memory for convenient firmware upgrade (if available)
VHSI Port (Synchronous)
• 36-pin high-density D-type connector
• Auto-detection of the following interface types:
– V.24 (EIA RS232-C)
–V.35
• Speeds: 2400 bps to 2048 Kbps, depending on interface
• Protocol support: PPP, Frame Relay, X.25, Frame Relay
Indicator Lights
• Power status
• VHSI port status
• AUX port status (currently unused)
• Ethernet connector status (located on the connector itself)
• Ethernet activity (located on the connector itself)
Protocol support
• PPP:
– PPP compression (PPP CCP, PPP LZS-STAC, MPPC, Ascend LZS)
– Security: PAP, CHAP, MS-CHAP
•X.25:
– CCITT/ITU compliance: X.25, X.32, and X.121 (1984)
– Up to eight X.25 virtual circuits (includes PVCs and SVCs)
– PVC and SVC support with inactivity timeouts
– Compression (Eicon Stacker, CISCO, Bay Networks)
•Frame Relay:
– IP over Frame Relay (RFC 2427)
– Maximum of 8 DLCI
– Routing between DLCI
– Congestion management (FECN, BENC)
– Extended LSN
– Automatic LMI detection
– Congestion control (FECN & BECN)
– Frame Relay compression (FRF.9)