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Telecom circuit inventory: Understanding connections

Understanding topology connections with IMS

As a piece of telecom circuit software, there are many parts to the topology of VC4’s Inventory & Management System (IMS). Here, we’re going to look at how different network connections – physical or logical circuits – work within it.

Telecom circuit inventory: Connection types

There are many different types of connection that can be stored within our network circuit software, which we’ll go into in more detail below:

1. Transport connections

These include SDH, SONET, WDM, OTN, MPLS, PDH, DSL, fiber and subsea cables, as well as ordinary cables.

2. Ethernet connections

Ethernet links that can be registered and managed in the telecom connection inventory include ethernet over microwave/MPLS/SDH/SONET, GPON, and carrier and metro ethernets.

In addition, e-lines – which connect to ports over a WAN – e-LAN and e-tree can be logged within IMS.

3. Data connections

MPLS, IP, DCN, ATM and frame relays are the data connections that can be managed in the telecom circuit software.

4. Voice connections

IMS can also look after customer voice connections, signal links, voice routes, voice core and access links, and voice interconnects to other telecoms providers.

5.  Mobile and radio connections

Mobile connections that can be managed within the network circuit software include core, RAN (2G, 3G and 4G), backhaul as well as both national and international connections.

Additionally, IMS can help a telecom service provider to maintain radio connections, such as those of the sub and microwave varieties.

Telecom circuit inventory: Other connection information

WiMax connectivity and satellite links can also be managed in VC4’s Inventory & Management System.

Service providers should remember that the most common connections will already be set up within the software, but the rest can be created in the system’s graphical user interface (GUI).

All circuit speeds and types can be modelled within IMS, regardless of how fast, slow, big or small they are. Some examples of the circuit speeds and types are:

  • 64k, 128k, 512k,
  • 2Mb/VC12/E1
  • 1.5Mb/VC11/T1
  • 34Mb/VC3/E3
  • 45MB/VC3/T3
  • VC4, VC4-4C, VC4-16C, VC4-64C, VCgroup
  • STS1, STS3, STS12, STS48, STS192
  • STM1, STM4, STM16, STM64
  • OC3,OC12, OC48, OC192
  • 10Mb, 100Mb, 1Gb
  • 2.5Gb, 10Gb, 100Gb, 400Gb
  • OTS, ODU0, ODU1, ODU2, ODU3, ODU4
  • PVC, VCC, VPC
  • VPN, VLAN, VRF, L2VPN, L3VPN
  • Pseudowires, CVLAN, SVLAN
  • Radio/Microwave/RF
  • Mesh Tunnels, Mesh Protection tunnels
  • 2MHz, 5Hz, 20MHz
  • Power

And different kinds of general information associated to each connection can be logged in the software.

For instance, connection names, location ends, speed, status, customer, platform and order information, protection settings, dates, framing and line coding may be recorded, to name just a few.

Telecom circuit inventory: Connection Layering

The complete hierarchy of a network can be modelled in IMS, presenting an easy platform for users to click through.

For example an *64k will be configured into a 2MB, the 2MB can be configured into VC4’s that are configured into STMx’s. Of course with the related timeslots, channels, VLAN ID’s, VPI/VCI’s or DLCI’s.

For those using WDM connections, channel numbers and frequencies can also be configured as seen within the GUI.

Telecom circuit inventory: Connection Ports

Each of the ports relating to a connection can be seen within the connections screen, along with the information such as its name, IP address, card interface, status, speed, type, comment field, platform and reservation information.

In addition, circuit protection mechanisms can be stored in the telecom circuit software, such as twin connections, MSP, mesh, ASON, DNI, SNCP and MSPRING.

Telecom circuit inventory: Connection Structure

Technology rules have been implemented in IMS to structure connections to allow sub-connections to be handled better.

You can see examples of the technical aspects of this in the below diagrams:

Telecom circuit software; visible are the Sub channels of a VC4

Sub channels of a VC4

Telecom circuit software; an OC12 with a STS3

OC12 with a STS3 and multiple STS1’s

Telecom circuit inventory: Connection planning

Finally, connections can be planned within the Inventory & Management System before they are built in the actual network, see our information upon page  Network planning and change management.

Contact VC4 on +31 72 5621771 or at sales@vc4.com today to find out more about managing your networks with IMS.