7-6
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 7      Reconfigurable Optical Add/Drop Cards
7.1.4    Channel Allocation Plans
 • 40-WXC-C
 • 4MD-xx.x 
7.1.4 Channel Allocation Plans
ONS 15454 DWDM ROADM cards are designed for use with specific channels in the C band and 
L band. In most cases, the channels for these cards are either numbered (for example, 1 to 32 or 1 to 40) 
or delimited (odd or even). Client interfaces must comply with these channel assignments to be 
compatible with the ONS 15454 system.
. The following cards operate in the C band:
 • 32WSS
 • 32DMX
 • 32DMX-C
 • 40-MUX-C
Table 7-5 2.5-Gbps Interface Optical Performance 
Parameter Class D Class E Class F Class G Class H Class J
Type
Power 
Limited
OSNR 
Limited
Power 
Limited
OSNR 
Limited
OSNR 
Limited
Power 
Limited
OSNR 
Limited
Power 
Limited
OSNR 
Limited
Power 
Limited
Maximum bit rate 2.5 Gbps 2.5 Gbps 2.5 Gbps 2.5 Gbps 1.25 Gbps 2.5 Gbps
Regeneration 3R 3R 2R 3R 3R 3R
FEC Yes No No No No No
Threshold Average Average Average Average Average Average
Maximum BER 10
–15
10
–12
10
–12
10
–12
10
–12
10
–12
OSNR sensitivity 14 dB 6 dB 14 dB 10 dB 15 dB 14 dB 11 dB 13 dB 8 dB 12 dB
Power sensitivity –31 
dBm
–25 
dBm
–30 
dBm
–23 
dBm
–24 dBm –27 
dBm
–33 
dBm
–28 dBm –18 dBm –26 dBm
Power overload –9 dBm –9 dBm –9 dBm –9 dBm –7 dBm –17dBm
Transmitted Power Range
1
1. These values, decreased by patchcord and connector losses, are also the input power values for the OADM cards.
TXP_MR_2.5G –1.0 to 1.0 dBm –1.0 to 1.0 dBm –1.0 to 
1.0 dBm
–2.0 to 0 dBm — —
TXPP_MR_2.5G –4.5 to –2.5 dBm –4.5 to –2.5 dBm –4.5 to 
–2.5 dBm
MXP_MR_2.5G — +2.0 to +4.0 dBm —
MXPP_MR_2.5G — –1.5 to +0.5 dBm —
2/4 port GbE 
Transponder (GBIC 
WDM 100GHz)
— — — — +2.5 to
 3.5 dBm —
Dispersion 
compensation 
tolerance
 –1200 to 
+5400 ps/nm
 –1200 to 
+5400 ps/nm
 –1200 to 
+3300 
ps/nm
 –1200 to 
+3300 ps/nm
–1000 to +3600 
ps/nm
–1000 to 
+3200 
ps/nm