Technical and implementation detail of SICN

Name of the project: Sachivalaya Integrated Communication Network (SICN)

SICN is a network owned by Government of Gujarat for their Voice, Data & Video Communication needs. This is Asia’s biggest network of Govt. of its kind. This Network is spread in the periphery of 12 kms. Connecting almost all the Govt. Boards and Corporations offices in capital of Gujarat Gandhinagar...
Department under which the project was taken: Information Technology Department, GAD, Government of Gujarat
Project Description:
SICN is a network owned by Government of Gujarat for their Voice, Data & Video Communication needs. This is Asia’s biggest network of Govt. of its kind. This Network is spread in the periphery of 12 kms. Connecting almost all the Govt. Boards and Corporations offices in capital of Gujarat Gandhinagar.

The core of this network is Lucent make DEFINITY G3r EPABX with the capacity of 7000+ lines and 570 trunks working on E1 R2 MFC and ISDN-PRI, expandable up to 25000 lines.
Through OFC this EPABX is connected to 11 remote units.

As a backbone around 100 Kms. Of Optical Fiber has been laid and 150 Kms. Of JFC has been laid with Structured cabling for Voice & Data nodes. There are 7000+ Voice Nodes and 5000 Data Nodes.

Network Architecture:

This Network is equipped with the DEFINITY Enterprise Communications Server (ECS), which organizes and routes voice transmissions. It can connect to private and public telephone networks, Ethernet LANs, ATM networks, and the Internet.

This network has the following components.
§ Processor Port Network
§ Remote Units.
§ OFC and UTP Backbone
§ MDF and IDF
§ Patch Panels
§ Endpoint (Analog or Digital)

Every DEFINITY ECS has one Processor Port Network (PPN). The PPN houses the Switch Processing Element and Center Stage Switch (CSS). The Switch Processing Element (SPE) contains the central processing unit, which supervises system operation. It also contains a mass storage system for loading system software and saving system translations. The Center Stage Switch (CSS) is a connection hub that provides port network communication to allow for growth. RUs are connected via fiber links to provide the connections required for voice and data information transfer. It provides both circuit-switched and packet-switched connections. Fiber Link Administration creates the translation data defining these links by identifying the endpoint pairs for each link.

OFC has been laid as the back bone for data networking. These OFCs are SMF and MMF both.

Remote Units (RU) are used when the system grows beyond the capacity of a single port network or must serve geographically dispersed offices. (RUs) provide additional ports as needed.
A system can have up to 43 RUs, Subscriber lines are coming from these RUs and these lines are connected at MDF & IDF and then carried by JFC cable to the distribution panel. From Distribution Panel / Patch Panel through CAT-5 Cable (UTP Cabling) it goes to the end subscriber.

Network Diagram

Status:

(a) Year. 2000
DESCRIPTION
QTY
Project Award on
22/3/2000
Project commissioned on
30/9/2000
Project Cost
9,54,17,008/-
EPABX System
AVAYA make Definity G3r.
Total Remote Unit
10
Total Voice Connection
4500
Total Data Connection
4000
In coming Lines
180
Out Going Lines
180
Average Internal Calls (Daily)
> 90,000 To 1Lac
Average Incoming Calls (Daily)
> 18,000 to 20,000
Average Outgoing Calls (Daily)
> 40,000 to 45,000
Remote Units At
New Sachivalaya, Old Sachivalaya, Vidhansabha, Sector 19, Sector 20, Udyog Bhavan, Police Bhavan & Krishi Bhavan
(b) Year. 2009(Till 15th July)
DESCRIPTION
QTY
Expansion At
New Remote Unit at Old Sachivalaya 500 lines & Expansion of Udyog Bhavan Remote Unit 250 Lines.
Total Remote Unit
11
Total Voice Connection
7245
Total Data Connection
7500
In coming Lines
180
Out Going Lines
480
Average Internal Calls (Daily)
1,80,000 Approx.
Average Incoming Calls (Daily)
20,000 Approx.
Average Outgoing Calls (Daily)
1,10,000 Approx.
New Office connected
298