The O2500-4 card is used as a line card in the system to implement the access and processing of four STM-16 optical interface services.
Provides four STM-16 optical interfaces.
Supports transparent transmission of overheads.
Supports the test on performance such as optical power, laser bias current and bit error.
Implements the multiplexing and demultiplexing of the signal.
Supports the SOH processing and supports all the defined SOH bytes (such as A1, A2, J0, B1, B2, S1, M1, H1, H2, H3, E1, E2, F1, D1 to D12, K1 and K2).
Supports monitoring of the higher order path overheads (such as J1, B3, C2 and G1).
Supports the equipment loopback and line loopback tests.
Supports the seamless switch between the active and standby clock and crossconnect cards.
Supports hot insertion at the optical interface.
Supports the automatic shutdown of the laser.
Supports the remote software upgrade.
Working Principle
The working principle of the O2500-4 card is shown as below.
Interface Specifications
The Optical Interface Specifications of the O2500-4 Card,
Item
Specification
Optical Interface Type
S-16.1
L-16.1
L-16.2
Target distance (km)
0 to 25
26 to 50
51 to 80
Source type
SLM
SLM
SLM
Mean launched optical power
(dBm)
-5 to 0
-1 to 3
-1 to 3
Central wavelength (nm)
1260 to 1360
1530 to 1565
1530 to 1565
Minimum extinction ratio (dB)
8.2
8.2
8.2
Receiving sensitivity (dBm)
-20
-28
-28
Overload point (dBm)
0
-9
-9
Item
Specification
Optical interface type1
V-16.2
V-16.2+BA
U2-16.2+BPA2
Target distance (km)
81 to 110
111 to 160
161 to 180
Source type
SLM
SLM
SLM
Mean launched optical power
(dBm)
0 to 5
12 to 18
12 to 18
Central wavelength (nm)
1530 to 1565
1530 to 1565
1530 to 1565
Minimum extinction ratio (dB)
8.2
8.2
8.2
Receiving sensitivity (dBm)
-29
-29
-29
Overload point (dBm)
-9
-9
-9
Note 1: This configurtaion is applicable to G.655 fiber. For the G.652 fiber, a dispersion compensation unit should be configured (replacing BPA2 with BPD2).
