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Chapter 6. Configuration
61200051L1-1D ISU 2x64 Dual Port ISDN Service Unit User Manual 55
Setting Protocol Options
The ISU 2x64 communicates with many different types of tele-
communication equipment including other ISU 2x64s, ISDN ter-
minal adapters, Switched 56 DSUs, and BONDING-compatible
inverse multiplexers. Communicating between such diverse
types of equipment requires various rate adaptation protocols to
support various bit rates and DTE settings. See Figure 6-21 for
the menu tree. The ISU 2x64 supports the following rate adapta-
tion protocols:
• Clear Channel (no rate adaptation protocol) (synch. only)
• BONDING mode 1 (Bandwidth on Demand Interoperability
Group)
• CCITT V.120
• CCITT V.110
• DSU 57.6 ASYNC
• T-LINK (Dial DDS DSU/CSU)
• SAP (Simple ADTRAN Protocol)
• FALLBACK
• PPP async-sync
Figure 6-21
Protocol Menu Tree
See Recommended Operating Protocols on page 6 for more informa-
tion on recommended modes of operation.
The desired protocol may be selected with AT commands at the
DTE port or from the ISU 2x64 front panel. A description of pro-
tocols follows.
3=CONFIG
1=Netw. options
2=DTE options
3=Protocol
4=Quick setup
5=Security
6=Remote Config
1=Clear Channel
2=BONDING mode 1
3=V.120
4=V.110
5=DSU 57.6 ASYNC
6=T-LINK
7=SAP
8=FALLBACK
9=PPP async-sync