Table of Contents

155-Mbps Port Adapters

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

This chapter includes the following sections:

Overview of the 155-Mbps Port Adapter

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 supports any port adapter combination required. Table 4-1 identifies the maximum number of 155-Mbps interface ports supported in each system.

Figure 4-1 shows a 155-Mbps port adapter that supports UTP connectors.

Figure 4-1   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 4-2:

Figure 4-2   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 4-2 for JATE approval details for the 155-Mbps port adapter.

Cabling the 155-Mbps Port Adapter

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 fabrics 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:

155-Mbps Port Adapter Connectors

To connect the 155-Mbps port adapter to the external ATM switch, use the following connectors. (See Figure 4-3 for UTP and single- and multimode fiber-optic connections. See Figure 4-4 for single-mode fiber-optic and long reach connections.)

Figure 4-3   155-Mbps UTP, Multimode, and Single-Mode Connections and LEDs

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

Note   For a description of these connectors, see the "ATM Connection Equipment Requirements" section. (Figure 2-1 shows an SC-type connector. Figure 2-3 shows an RJ-45 connector.)

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 4-3 and Figure 4-4 and described in Table 4-3.

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