WDM/DWDM/CWDM/OTN Network Management

The Inventory & Management System OSS software application from VC4 gives telecom service providers the ability to manage their WDM and OTN networks.

It boasts wide-ranging functionality, giving customers access to:


IMS can be used to manage all WDM and OTN connections, including:

  • OTS (example OTS32, OTS40, OTS44, OTS72, OTS80, OTS88, etc)
  • OMS
  • OTU
  • ODU4 (100G channel), ODU3 (40G channel), ODU2 (10G channel), ODU1 (2.5G channel), ODU0 (1G channel)

Users can draw up a graphical overview for each connection, with the ability to carry this function out on the fly by utilizing information held within the database. The overview includes all details of the worker and project route, incorporating information on leased lines.

The software offers customization options, allowing telecom service providers to display a range of information – such as location, card and ODF details – on the screen.

Here is an example of an STM16 SDH connection – equivalent to OC48 SONET – running over a WDM network:

stm16 SDH connection running over WDM network
STM16 SDH connection running over WDM network

Connection Layering

IMS also makes it simple for users to walk through the various different layers of connection, such as from OTS to ODU3 to ODU2 to ODU 1, or on SDH/SONET/MPLS networks.

Below is an example of a sub-OTS network, incorporating channel and frequency.

example of sub WDM OTS
Example of sub OTS


With IMS, customers have the ability to model their WDM equipment, along with all of their other platforms – from SDH, ethernet and MPLS to voice, DSL and servers.

It also has the advantage of being independent from any given vendor, which means all types of vendor can be modelled using the software application.

Graphical representations can be created for the front and back layout of every shelf and sub-shelf.

Graphical representation equipment WDM
Graphical representation Equipment WDM

DDF-ODF related equipment

Furthermore, IMS gives telecom service providers the option of pre-wiring equipment to a DDF, ODF or other type of distribution frame. Users can then choose to store these frames and cabling in the system.

WDM Frames and cabling stored in the system
Stored frames and cabling

Digital and optical distribution frames can be created with location as the starting point, and DDF/ODF shelves and patch panels can be positioned within a rack.

There is a front and back to every frame; per frame position, a connection or patch can be made to a piece of equipment (pre-wiring) or to another frame.

Below a screenshot of an ODF with its positions.

Screenshot of an WDM/ODF with its positions
Screenshot of an ODF with its positions

This image shows a cable route comprising two pieces of equipment in different locations, connected to one another via distribution frames and internal cabling:

WDM Distribution-frames
Distribution frame

Relation between other platforms

IMS shows the relationship between OTN and other platforms, like fiber, SDH, SONET, MPLS or ethernet. This association can be between a carrier and sub-carrier, or a circuit/cable between the ports of the different platforms. This is demonstrated by the following schematic drawing:

Relations WDM

Network Map

Network map functionality allows telecom service providers to create their own graphical network drawings.

All items pictured on the network map are drawn from the database. Connections and equipment within the network can be opened directly from the map, while configuration of the infrastructure can also be carried out via this form.

The following screenshot gives an example of a network map:

Networkmap WDM
Networkmap WDM

To discover more about WDM management with VC4’s Inventory & Management System, get in touch with one of the team on New call-to-action or at New call-to-action  today.