VIP Port Adapter Functions

4T Port Adapter

The following sections discuss the 4T port adapter, which is shown in Figure 21.

Synchronous Serial Overview

4T Port Adapter Specifications, page 47

Serial Distance Limitations, page 48

4T Serial Connection Equipment, page 48

4T Port Adapter LEDs, page 50

4T Port Adapter Receptacles, Cables, and Pinouts, page 51

Attaching 4T Port Adapter Interface Cables, page 59

Configuring the 4T Interfaces, page 60

The 4T port adapter (see Figure 21) is currently available on the VIP-4R/4T, which has two port adapter slots: port adapter slot 0 and port adapter slot 1. The 4T port adapter, installed in port adapter slot 1, provides up to four synchronous serial interfaces. Each serial interface allows a maximum bandwidth of 2.048 Mbps.

Figure 21 4T Port Adapter, Faceplate View

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FAST SERIAL

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TC

RD

RC

LB

CD

TD

TC

RD

RC

LB

CD

TD

TC

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LB

CD

TD

TC

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RC

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CD

H4496

Synchronous Serial Overview

The 4T port adapter provides four channel-independent, synchronous serial ports that support full-duplex operation at T1 (1.544 Mbps) and E1 (2.048 Mbps) speeds. Each port supports any of the available interface types: Electronics Industries Association/Telecommunications Industries Association (EIA/TIA)-232, EIA/TIA-449, V.35, X.21, and EIA-530.

Note Prior to the acceptance of the EIA/TIA standards by the ANSI committee, they were referred to as recommended standards called RS-232 and RS-449.

VIP-4R/4T Installation and Configuration 45

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Cisco Systems VIP-4R/4T manual 4T Port Adapter, Synchronous Serial Overview