2-Port And 4-Port Oc-3C/Stm-1 Atm Spa Overview - Cisco 7600 series Hardware Installation Manual

2-Port and 4-Port OC-3c/STM-1 ATM SPA Overview

Figure 3-6
The SFP optical transceiver modules used with the 1-Port Channelized STM-1/OC-3 SPA provide the
following optical fiber options:
•
•
For single-mode and multimode optical fiber connections, you can use either a duplex LC-type cable (see
Figure
Use single-mode (for intermediate- or long-reach configurations) or multimode optical fiber cable to
connect your router to a network or to connect two 1-Port Channelized STM-1/OC-3 SPA -equipped
routers back to back.
Long-range SFP optical transceiver modules (for long-reach configurations) cannot be connected
back-to-back without using an attenuator between the two of them.
Figure 3-7
RX

2-Port and 4-Port OC-3c/STM-1 ATM SPA Overview

The following sections describe the 2-Port and 4-Port OC-3c/STM-1 ATM SPA:
Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide
3-12
SFP Optics Module
Multimode—155-Mbps, OC-3c/STM-1 optical fiber (SONET STS-3c or SDH STM-1)
Use a multimode optical fiber that has a core/cladding diameter of 62.5/125 microns.
Single-mode—155-Mbps, OC-3c/STM-1 optical fiber (SONET STS-3c or SDH STM-1)
Use a single-mode optical fiber that has a modal-field diameter of 8.7 ±0.5 microns. (Nominal
diameter is approximately 10/125 microns.)
3-12) or two simplex LC-type cables, one for transmit (TX) and one for receive (RX).
LC Type Cables
TX
Chapter 3 Overview: Cisco 7600 Series Router Shared Port Adapters
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