Cisco 7600 SIP 200 Hardware Installation Guide - Page 107
-Port Gigabit Synchronous Ethernet SPA Cables and Connectors, SFP Optics Module, BITS Interface
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Chapter 3 Overview: Cisco 7600 Series Router Shared Port Adapters 5-Port Gigabit Ethernet SPA Overview 2-Port Gigabit Synchronous Ethernet SPA Cables and Connectors SFP Optics Module The 2-Port Gigabit Synchronous Ethernet SPA uses a small form-factor pluggable (SFP) optical transceiver module installed in each port. Figure 3-49 SFP Optics Module 127158 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. BITS Interface The BITS/SSU is a bi-directional interface implemented on the 2-Gigabit Synchronous Ethernet SPA. It relays a clock to an SSU and in return receives a clock without the wander. This interface also allows the 2-Port Gigabit Synchronous Ethernet SPA to be a system resource for older platforms that are not BITS capable. 5-Port Gigabit Ethernet SPA Overview The following sections describe the 5-Port Gigabit Ethernet SPA: • 5-Port Gigabit Ethernet SPA LEDs, page 3-62 • 5-Port Gigabit Ethernet SPA Cables, Connectors, and Pinouts, page 3-62 • SFP-GE-S Modules, page 3-64 • SFP-GE-L Modules, page 3-64 • SFP-GE-Z Modules, page 3-64 • SFP-GE-T Modules, page 3-65 • SFP Module Cabling and Connection Equipment, page 3-65 OL-5052-14 Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide 3-61