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CSU/DSU MS DBU
Appendix F. Specifications
Operating Modes
• Dedicated DDS (point-to-point, multipoint)
• Switched 56 (4-wire)
• ISDN (1B+D)
• PSTN (V.34)
Network Data Rates
• Dedicated-mode service rates: 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps
• Switched-mode service rate: 56 kbps
• Dial Backup: Switched 56 (56 kbps), V.34 (2.4 to 33.6 kbps), ISDN (56 or
64 kbps)
DTE Rates Provided
• DTE rates match service rates
• DTE-to-loop rate matching in both dedicated and switched modes
• Synchronous rates: 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps
• Asynchronous rates: 2.4, 4.8, 9.6, 19.2, 38.4, and 57.6 kbps
DTE Interfaces
Both EIA-232 and V.35 electrical and physical DTE interfaces
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