Chapter 11. Specifications86 ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1DData Rates (DTE)When using single DTE interface:• 300 bps to 115.2 kbps asynchronous• 2400 bps to 128 kbps synchronousWhen using dual DTE interfaces:• 300 bps to 57.6 kbps asynchronous on each interface• 2400 bps to 64 kbps synchronous on each interfaceB Channel Aggregation• BONDING Protocol Mode 1. Used for speeds over 64 kbpsfrom a single DTE interface.• RFC 1717 Multilink PPP used for speeds over 57.6 kbps for asingle 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 PPPInteroperability• 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 devicesSwitch 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.
