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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
2-Port and 4-Port OC-48/STM-16 POS SPA Overview
OC-48 Module Connections
shows the OC-48 specifications for use with the 2-Port and 4-Port OC-48/STM-16 POS SPA.
Mate Interface Cables
The 2-Port and 4-Port OC-48/STM-16 POS 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 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 2-45 shows the mate cables used to connect the SPAs.
Table 2-41
OC-48 Specifications
Specification
Description
Wavelength
OC-48 SR: 1266 nm to 1360 nm
OC-48 IR-1: 1260 nm to 1360 nm
OC-48 LR-2: 1500 nm to 1580 nm
Cabling distance (maximum)
OC-48 SR: 2 km (1.2 miles)
OC-48 IR-1: 15 km (9.3 miles)
OC-48 LR-2: 80 km (49.7 miles)
Operating case temperature range
OC-48 SR: 23 to 158 degrees F (–5 to 70 degrees C)
OC-48 IR-1: 23 to 158 degrees F (–5 to 70 degrees C)
OC-48 LR-2: 23 to 158 degrees F (–5 to 70 degrees C)
TX power
OC-48 SR: –10 to –3 dBm
OC-48 IR-1: –5 to 0 dBm
OC-48 LR-2: –2 to +3 dBm
Receiver sensitivity (maximum)
OC-48 SR: –18 dBm
OC-48 IR-1: –18 dBm
OC-48 LR-2: –28 dBm
RX overload
OC-48 SR: –3 dBm
OC-48 IR-1: 0 dBm
OC-48 LR-2: –9 dBm
Maximum receiver power damage
OC-48 SR: +5 dBm
OC-48 IR-1: +5 dBm
OC-48 LR-2: +5 dBm
