Cisco ONS 15454 DWDM Reference Manual

11-2
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 11 Optical Channel Circuits and Virtual Patchcords Reference
11.1.1 OCHNC Circuits
11.1.1 OCHNC Circuits
OCHNC circuits establish connectivity between two optical nodes on a specified C-band wavelength.
The connection is made through the ports present on the wavelength selective switches, multiplexers,
demultiplexer, and add/drop cards. In an OCHNC circuit, the wavelength from a source OCH port
ingresses to a DWDM system and then egresses from the DWDM system to the destination OCH port.
The source and destination OCH port details are listed in Table 11-1.
11.1.2 OCHCC Circuits
OCHCC circuits extend the OCHNC to create an optical connection from the source client port to the
destination client port of the TXP/MXP cards. An OCHCC circuit represents the actual end-to-end client
service passing through the DWDM system.
Each OCHCC circuit is associated to a pair of client or trunk ports on the transponder (TXP), muxponder
(MXP), GE_XP (in layer-1 DWDM mode), 10GE_XP (in layer-1 DWDM mode), or ITU-T line card.
The OCHCCs can manage splitter protection as a single protected circuit. However, for the Y-Cable
protection, two OCHCC circuits and two protection groups are required.
Ta b l e 11- 1 O C H N C Po r t s
Card Source Ports Destination Ports
32WSS
32WSS-L
40-WSS-C
40-WSS-CE
ADD-RX —
32MUX-O
40-MUX-C
CHAN-RX —
32DMX-O
32DMX
32DMX-L
40-DMX-C
40-DMX-CE
— CHAN-TX
4MD
AD-1B-xx.x
AD-4B-xx.x
AD-1C-xx.x
AD-4C-xx.x
CHAN-RX CHAN-TX

Cisco ONS 15454 DWDM Specifications

General

Chassis Type	DWDM
Form Factor	Rack-mountable
Slots	17
Storage Temperature	-40 to 158°F (-40 to 70°C)
Relative Humidity	5% to 95% non-condensing
Power Supply	AC or DC
Cooling	Internal fans
Operating Temperature	23 to 104°F (-5 to 40°C)
Altitude	0 to 6500 ft (0 to 1981 m)
Safety Compliance	EN 60950-1
EMI Compliance	FCC Part 15