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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
OL-14126-12
Chapter 3 Overview: Cisco ASR 1000 Series Aggregation Services Routers SPAs
2-Port and 4-Port OC-48c/STM-16 POS SPA Overview
The 1-Port OC-48c/STM-16 POS SPA interface is compliant with the following RFCs:
• RFC 1662, PPP in HDLC-like Framing
• RFC 2615, PPP over SONET/SDH
1-Port OC-48c/STM-16 POS SPA Optical Transceiver Modules, Connectors, and
Cables
The 1-Port OC-48c/STM-16 POS SPA uses a single-mode, 9.95 Gbps, OC-48 optical fiber (SONET
STS-48) optical transceiver module for SONET connection to the network.
The 1-Port OC-48c/STM-16 POS SPA supports the following types of optical transceiver modules:
• Single-mode short-reach (SR) SFP module—SFP-OC48-SR
• Single-mode intermediate-reach (IR) SFP module—SFP-OC48-IR1
• Single-mode long-reach (LR) SFP module—SFP-OC48-LR2
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) to connect your router to a network.
Figure 3-26 shows the cable type for use with the XFP optical transceiver module on the
1-Port OC-48c/STM-16 POS SPA.
Figure 3-26 LC-Type Cable for the SFP Optical Transceiver Modules
Note The 40-pin connector on the 1-Port OC-48c/STM-16 POS SPA is used for resilient packet ring (RPR)
connections.
2-Port and 4-Port OC-48c/STM-16 POS SPA Overview
The following sections describe the 2-Port and 4-Port OC-48c/STM-16 POS SPA:
• 2-Port and 4-Port OC-48c/STM-16 POS SPA LEDs, page 3-42
• 2-Port and 4-Port OC-48c/STM-16 POS SPA Interface Specifications, page 3-43
• 2-Port and 4-Port OC-48c/STM-16 POS SPA Cables, Optical Transceiver Modules, and Connectors,
page 3-43
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