155-Mbps Port Adapters

This chapter describes the 155-Mbps port adapter that is supported in the following ATM systems:

• Catalyst 8540 MSR
  
  
• Catalyst 8510 MSR
  
  
• LightStream 1010
  
  
• Catalyst 5500
  
  

This chapter includes the following sections:

• About 155-Mbps Port Adapters
  
  
• Cabling 155-Mbps Port Adapters
  
  

About 155-Mbps Port Adapters

The 155-Mbps Synchronous Optical Network (SONET) STS3c/SDH STM1 port adapter is used for intercampus or wide-area links. The 155-Mbps port adapter supports SC-type and unshielded twisted-pair (UTP) connectors.

Interface Ports Supported

The ATM switch router supports any port adapter combination required. Table 5-1 identifies the maximum number of 155-Mbps interface ports supported in each system.

Figure 5-1 shows a 155-Mbps port adapter that supports UTP connectors.

Figure 5-1: 155-Mbps Port Adapter with UTP-5 Connectors

ATM Connections Supported

The 155-Mbps port adapter has four ports that provide the following ATM connections, as shown in Figure 5-2:

• The 155-Mbps single-mode port provides WAN or intercampus ATM connections.
  
  
• The 155-Mbps multimode port provides intercampus ATM connections.
  
  
• The 155-Mbps UTP-5 port provides desktop-to-wiring-closet
  ATM connections.
  
  

Figure 5-2: 155-Mbps Port Adapter ATM Intercampus and WAN Connections

JATE Approval

The 155-Mbps port adapter with one single-mode and three multimode connections meets the Japan Approvals Institute for Telecommunications Equipment (JATE) approval. See Table 5-2 for JATE approval details for the 155-Mbps port adapter.

Cabling 155-Mbps Port Adapters

This section describes supported cabling configurations for the 155-Mbps port adapter, which provides single-mode, multimode, mixed (one single-mode and three multimode), and UTP connections.

Note   All ATM interfaces are full duplex. You must use the appropriate ATM interface cable to connect the ATM single-mode, multimode, or UTP port adapter interface with an external ATM network.

155-Mbps Port Adapter Supported Interfaces

The 155-Mbps port adapter provides an interface to ATM switching fabric for transmitting and receiving data at up to 155 Mbps bidirectionally. The 155-Mbps port adapters can support interfaces that connect to the following physical layers:

• SONET 155-Mbps multimode fiber-optic—STS-3c
  
  
• SONET 155-Mbps single-mode fiber-optic—STS-3c
  
  
• SONET 155-Mbps UTP-5—STS-3c
  
  

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Note   See the Table B-1 on for cabling requirements.

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155-Mbps Port Adapter Connectors

To connect the 155-Mbps port adapter to the external ATM switch router, use the following connectors.

• For multimode, single-mode, and mixed single-mode traffic, use an SC-type connector.
  
  
• For UTP traffic, use an RJ-45 connector.
  
  

(See Figure 5-3 for UTP and single- and multimode fiber-optic connections. See Figure 5-4 for single-mode fiber-optic and long reach connections.)

Figure 5-3: 155-Mbps UTP, Multimode, and Single-Mode Connections and LEDs

Figure 5-4: 155-Mbps Single-Mode Connections and LEDs

Note   See "Connectors and Connector Pinouts" for information about SC-type and RJ-45 connectors.

155-Mbps Port Adapter LEDs

The LEDs provide status information for the individual 155-Mbps single-mode, multimode, and UTP interface connections. The LEDs are shown in Figure 5-3 and Figure 5-4 and described in Table 5-3.

Note   Single-mode fiber-optic interface connectors are blue, while multimode connectors are black.