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Chapter 11. Specifications
86
ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1D
Data Rates (DTE)
When using single DTE interface:
• 300 bps to 115.2 kbps asynchronous
• 2400 bps to 128 kbps synchronous
When using dual DTE interfaces:
• 300 bps to 57.6 kbps asynchronous on each interface
• 2400 bps to 64 kbps synchronous on each interface
B Channel Aggregation
• BONDING Protocol Mode 1. Used for speeds over 64 kbps
from a single DTE interface.
• RFC 1717 Multilink PPP used for speeds over 57.6 kbps for a
single DTE interface.
Rate Adaptation
• T-Link
• CCITT V.120
• CCITT V.110
• Clear Channel
• SAP
• FALLBACK
• DSU 57.6 Async
• BONDING mode 1
• PPP Async-Sync
• Multilink PPP
Interoperability
• BONDING Mode 1-compatible Inverse Multiplexers (AS-
CEND, PROMPTUS, Teleos, etc.)
• Switched-56 DSUs (2-wire and 4-wire), ISU 128s, ISDN TAs
• PPP/Multilink compatible devices
Switch Compatibility
• AT&T 5ESS, NTI DMS-100, National ISDN-1, NEC, Euro IS-
DN*, TDX10*, TDX1B*, KDD*, NTT*, and VN4*.
*Only available on part numbers 1200051L5 and 1200051L6.