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PA-POS-1OC3 Single-Port Port Adapter Installation and Configuration Guide
OL-6514-04
Chapter 1 PA-POS-1OC3 Overview
OC-3 Optical Fiber Specifications
Table 1-1 lists the OC-3 optical parameters.
To calculate link losses and dispersion losses for your application, refer to the following specifications
and documents:
• EIA/TIA-IVa Dispersion Unshifted Single-Mode Fiber
• EIA-TIA-IVb Dispersion Shifted Single-Mode Fiber
• GR-20-CORE, Generic Requirements for Optical Fiber and Fiber-Optic Cable
• ITU-T Recommendation G.957, Optical Interfaces for Equipment and Systems Relating to the
Synchronous Digital Hierarchy
Network Management Support
Following is the protocol and MIB support for the PA-POS-1OC3:
• SNMP agent v1 (RFC 1155–1157)
• MIB II (RFC 1213); POS MIB support is available with Cisco IOS Release 12.0
Table 1-1 OC-3 Optical Parameters
Transceiver
Type
1
1. This table gives nominal OC-3 optical parameters.
Transmit
Power
Maximum Power
to Receiver
2
, dBm
2. This value represents the maximum power to which any receiver can be exposed.
Receiver
Sensitivity, dBm
Loss
Budgets, dB
Nominal Distance
Between Stations
Single-mode
3
long reach
3. Complies with Bellcore GR-253-CORE Long Reach Specification (LR-1).
–5 dBm min.
to 0 dBm max.
at 1280–1335 nm
4
4. Nominal wavelength is 1310 nm.
–10 –34 10 to 28 Up to 25 mi. (40 km)
Single-mode
5
intermediate reach
5. Complies with Bellcore GR-253-CORE Intermediate Reach Specification (IR-1).
–15 dBm min.
to –8 dBm max.
at 1280–1335 nm
4
–8 –28 0 to 12 Up to 9 mi. (15 km)
Multimode
6
short reach
6. Complies with Short-Reach OC-3 Specification SR-OC-3.
–20 dBm min.
to –14 dBm max.
at 1280–1335 nm
4
–8 –30 0 to 7 Up to 1.2 mi. (2 km)