Technical data

Using the Centillion 100 ATMSpeed/155 Switch Modules and Media Dependent Adapters
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• A single-mode fiber optic MDA (Model 5720-17 MDA) provides SONET/
SDH STS-3c connectivity over 8.5/125 µm single-mode fiber cable.
ATMSpeed/155 MDA MCP Switch Module
The ATMSpeed/155 MDA MCP Switch Module (Figure 1-3) manages the
Centillion 100 switch. One (and only one) MCP module is required for each
Centillion 100 chassis; however, a TokenSpeed/MCP or an EtherSpeed/MCP
module could also be used to meet this requirement.
The ATMSpeed/155 MDA MCP module has both a serial port (Mini DIN 8) and a
10BASE-T port (RJ-45) to connect a network management station.
In addition to Centillion 100 chassis management, the MDA MCP switch module
has two slots for installing MDAs provide ATM port connection. Each MDA
provides two OC-3 ports; a fully equipped MDA MCP switch module therefore
has four ports for making ATM connections. You can install different MDAs in
one MDA MCP switch module as needed to obtain maximum flexibility of
connection types.
The MDA MCP switch module provides different types of ATM connectivity
through the following MDAs:
• A multimode fiber optic MDA (Model 5720-14 MDA) provides synchronous
optical network/synchronous digital hierarchy (SONET/SDH) synchronous
transport signal-3c (STS-3c/OC-3c) connectivity over 62.5/125 µm or 50/125
µm multimode fiber cable.
• An unshielded twisted pair (UTP) MDA (Model 5720-15 MDA) provides
SONET/SDH STS-3c connectivity over Category 5 UTP cable.
• A single-mode fiber optic MDA (Model 5720-17 MDA) provides
SONET/SDH STS-3c/OC-3c connectivity over 8.5/125 µm single-mode fiber
cable.
Note: The 10BASE-T Ethernet port on the ATMSpeed/155 MCP module is
not supported by the switch software at this time. It will be supported in a
future release.