Cisco XR 12000 Series - Manual (Page 75)

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Cisco XR 12000 Series Router SIP and SPA Hardware Installation Guide
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Chapter 2 Overview: Cisco XR 12000 Series Router Shared Port Adapters
4-Port OC-3/STM-1 POS SPA Overview
Mate Interface Cables
The 1-Port OC-192/STM-64 POS/RPR XFP SPA supports two mate interface configurations:
• Mate between two OC-192 SPAs in the same SIP
• Mate between two OC-192 SPAs in adjacent SIPs
Two 1-Port OC-192/STM-64 POS/RPR XFP 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 2-31 shows the mate cables
used to connect the SPAs.
Figure 2-31 SPA Mate Cables
Note The RPR mate cable is necessary only when the SPA is to be used in RPR mode. It is not needed in POS
mode. Support for the RPR feature is dependent on the platform software release feature content. Verify
support for the RPR feature support via SPA datasheets or by contacting your Cisco representative.
4-Port OC-3/STM-1 POS SPA Overview
The 2-Port and 4-Port OC-3/STM-1 POS SPA is a single-height SPA that installs into one SIP subslot.
The OC-3c/STM-1 POS SPA with small form-factor pluggable (SFP) optical transceiver modules
provides SONET and SDH network connectivity with a per-port bandwidth of 155.52 Mbps. The 2-Port
and 4-Port OC-3/STM-1 POS SPA operates at quarter rate.
1 Long length RPR mate cable for single port
RPR SPAs (CBL-RPR-OC192-L) 2 Short length RPR mate cable for single port
RPR SPAs (CAB-RPR-OC192-S)
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