Cisco Systems PA-POS-2OC3 Manual De Usuario
1-5
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
To calculate link losses and dispersion losses for your application, refer to the following specifications
and documents:
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
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
Type
1
1.
This table gives nominal OC-3 optical parameters.
Transmit
Power
Power
Maximum Power
to Receiver
to Receiver
2
, dBm
2.
This value represents the maximum power to which any receiver can be exposed.
Receiver
Sensitivity, dBm
Sensitivity, dBm
Loss
Budgets, dB
Budgets, dB
Nominal Distance
Between Stations
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
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
to –8 dBm max.
at 1280–1335 nm
–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
to –14 dBm max.
at 1280–1335 nm
–8
–30
0 to 7
Up to 1.2 mi. (2 km)