Cisco ONS 15454 DWDM

To Next Page

To Previous Page

9-8

Cisco ONS 15454 DWDM Reference Manual, R8.5

78-18343-02

Chapter 9 Node Reference

9.1.3 OADM Node

Figure 9-6 Terminal Node with 40-MUX-C Cards Installed

9.1.3 OADM Node

An OADM node is a single ONS 15454 node equipped with cards installed on both sides and at least one

AD-xC-xx.x card or one AD-xB-xx.x card and two TCC2/TCC2P cards. 32MUX-O/40-MUX-C or

32DMX-O/40-DMX-C/40-DMX-CE cards cannot be installed in an OADM node. In an OADM node,

channels can be added or dropped independently from each direction and then passed through the

reflected bands of all OADMs in the DWDM node (called express path). They can also be passed through

one OADM card to another OADM card without using a TDM ITU-T line card (called optical

pass-through) if an external patchcord is installed.

Unlike express path, an optical pass-through channel can be converted later to an add/drop channel in an

altered ring without affecting another channel. OADM amplifier placement and required card placement

is determined by the Cisco TransportPlanner tool or your site plan.

OADM nodes can be amplified or passive. In amplified OADMs, booster and preamplifier cards are

installed on bode sides of the node. Figure 9-7 shows an example of an amplified OADM node

configuration. In addition, OADM nodes can be asymmetric. Amplifiers may be installed in one side,

but not the other. Or preamplifiers may be installed in one side, and a booster in the other.

OPT-BST or OSC-CSM

OPT-PRE or TXP/MXP

DCM-xxx

Air ramp

DCM-xxx

TCC2/TCC2P

40-MUX-C

40-DMX-C

Blank or TXP/MXP

OSCM or Blank

Blank

TCC2/TCC2P

AIC-I

159456

Blank or TXP/MXP or MS-ISC-100T

Cisco ONS 15454 DWDM - Page 408