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