About the Hotwire 7975 Standalone Termination Unit
Network Configuration
Figure 1-1 shows a network application using a 4-port Hotwire 8775 M/SDSL Termination Unit for access concentration in a central office (CO). A frame relay switch and a router are connected, through the termination unit, to partner units supporting a host or router, and frame relay encapsulated or unframed data.
Frame |
Relay |
Switch |
Router |
V.35 |
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| V.35 |
| CO Site |
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| 7975 |
| V.35 |
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V.35 | 2.048 Mb | V.35 |
| over | 7975 |
| SDSL | |
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| V.35 |
| 7975 |
E1 Host
(Frame Relay
Encapsulated
Data)
Router
(Frame Relay
Encapsulated
Data)
Router
7975
| 8775 Termination Unit |
| Customer |
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| in 8600 DSLAM |
| Premises (CP) |
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CO Site |
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LTU |
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| NTU | |||
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| 7975 | |||
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V.35 |
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| V.35 | |||
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Figure 1-1. Sample M/SDSL Configurations
User Interface Types
There are three types of user interfaces to the 7975 Standalone Termination Unit:
H
HFront panel LED status indicators. See Chapter 4, Monitoring the Unit.
HInternal DIP Switches. See Chapter 3, Initial Startup and Configuration.
December 1998 |