Cisco XR 12000 Series - Manual (Page 90)

2-60
Cisco XR 12000 Series Router SIP and SPA Hardware Installation Guide
OL-17438-04
Chapter 2 Overview: Cisco XR 12000 Series Router Shared Port Adapters
1-Port OC-48/STM-16 POS SPA Overview
The 1-Port OC-48/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-48/STM-16 POS SPA Optical Transceiver Modules, Connectors, and
Cables
The 1-Port OC-48/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-48/STM-16 POS SPA supports the following type of optical transceiver module:
• Single-mode short reach (SR) SFP module—SFP-OC48-SROC-48/STM-16c
• Single-mode intermediate reach (IR) SFP module—SFP-OC48-IR1OC-48/STM-16c
• Single-mode long reach (LR) SFP module—SFP-OC48-LR2OC-48/STM-16c
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 2-42 shows the cable type for use with the XFP optical transceiver module on the
1-Port OC-48/STM-16 POS SPA.
Figure 2-42 LC-Type Cable for the SFP Optical Transceiver Modules
Note The 40-pin connector on the 1-Port OC-48/STM-16 POS SPA is used for resilient packet ring (RPR)
connections.
Mate Interface Cables
The 1-Port OC-48/STM-16 POS SPA supports two mate interface configurations:
• Mate between two OC-48 SPAs in the same SIP
• Mate between two OC-48 SPAs in adjacent SIPs
Two 1-Port OC-48/STM-16 POS SPAs are connected using a 40–pin connector copper mate cable. The
length of the cables allow only two possible connection scenarios, next slot horizontal and same slot
vertical. This assumes that the chassis is mounted vertically. Figure 2-43 shows the mate cables used to
connect the SPAs.
/ / / /
/ /
TX RX
84929