1. EZHILARASU A
Contact No: 9884369167
E-mail: ezhil_arasu2002@yahoo.com
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Over 6.9 years of experience in telecom domain in design and development using C and C++
language on Unix/Linux environment varying from CCN(Charging Control Node), USSD-GW USSD-MBI,SCP-
NG,CRBT-CONTROLLER,GMSC-MT call handler, SIP registration server , SIP Presence server and SIP call
Controller
Experience Summary:
• Senior software Engineer in Ericsson India Global Services Private Limited. Oct 2013 – till date
• Senior Developer in Plintron Global Technologies Pvt Ltd . July 2009 – 2013 Oct
Core Competencies:
• Handled CCN Customer TR’s and escalation as a DM Team Lead.
• Leading the team in analyzing and identifying solution for customer issues.
• Developing customer requirements and improvements to the product.
• Interacting with different stake holders (support, customer unit) on behalf of team.
• Good understanding of Prepaid & Postpaid Charging system ( Mobile core and IN) .
• Design and development in C ,C++ with good exposure to Data Structures and Algorithms.
• UNIX concepts and System Programming dealing with file management, and various IPC
mechanisms.
• Good knowledge of SS7 protocols TCAP(MAP,CAP,INAP) SIP and DIAMETER.
• Good knowledge of GSM Technology
• Interpretation and Implementation of SIP-Registration Server and Presence server using
Kamailio, asterisk Open source code based on SIP protocol
• Proven ability to research, analyze and solve problems with great instinct, determination and
business sense.
Technical Skills:
• Operating Systems : Unix/Solaris/Linux.
• Platform :Telecom server Platform.
• Software :Oracle 10g Ulticom Signalware stack,IXIA MGTS
• Source Repositories :Micro soft Visual source safe, SVN, Clear Case
• Programming Languages : C, C++,Pro*C
• Protocols : SS7,DIAMTER, TCP, SIP,UDP
• Tools :GDB,DBX,Toad and IBM purify Plus

2. Educational Qualification:
B.Tech Information Technology passed out in 2008 from Sri Sai Ram Engineering College
affiliated to Anna University
Charging Control Node (CCN) Ericsson India Global
Technology : ss7, Diameter,TCP,SNMP
Platform : C, C++, TSP based on Linux/Unix
Product description:
A charging control node is a signaling control point used in a communication network (such as
a 3G/4G mobile communication system) that can receive and process, track, and rate (assign
a value to) packet data service and content usage requests. A CCN can find and communicate
with an SDP, perform session control, identifies the correct device and account numbers
(number portability), and creates call detail records.
Roles and Responsibilities:
1. Guiding team in analyzing customer issues and providing solutions.
2. Interacting with external stake holders (support and customer unit ).
2. Contribution towards design and Review Writing.
3. As part of CCN-Product owner team doing Node Improvement studies.
4. Responding for technical queries for CCN support through DAT query
SIP Registration and Presence Server and Call
Controller
Plintron Global Technologies
Technology : Sip/Voip
Platform : C, C++, Linux
Product description:
Sip-Registration Provides authorization for sip user who are already registered in the domain and maintains
current device IP and port of the subscribe
Sip Presence Server provides sip user’s to subscribe the status of the other sip users and publishing the
status of the self to the subscribed user
Sip Call Controller provide routing and charging functionalities for the SIP call.
Roles and Responsibilities:
1. Review and analysis of Requirement Specifications and High Level Design Documents
2. Contribution towards design and Review Writing
3. Preparing Unit Test Cases and Execution of the same.

3. 4. Compiling the Open source code of Kamailio and asterisk in Linux server
5. Configuring the Kamailio as Proxy Server and Registration server and asterisk as a Call
Controller
6. Modifying the Open Source Code based on the Requirements Identified
7. Helping New Joiner’s to understand the Product
SCP-Network Gateway Plintron Global Technologies
Technology : GSM/SS7
Platform : C, C++, UNIX
Product Description:
SCP network gateway is an IN application based on CAP protocol which interfaces between the core In
network and billing Engine.MSC/GMSC will interact with SCP incase of MO/MT calls and SCP will do
Authentication and authorization and control's the complete call.
Roles and Responsibilities:
1. Review and analysis of Requirement Specifications and High Level Design Documents
2. Contribution towards design and Review Writing
3. Preparing Unit Test Cases and Execution of the same.
4. Implementing New Feature Requirements
5. Preparing LLD and HLD for New Requirements.
6. Helping New Joiner’s to understand the Product
CRBT Controller Plintron Global Technologies
Technology : GSM/SS7
Platform : C++, Unix
Product Description:
CRBT-Controller is application which intercepts all the MT call and validates whether the subscriber is Crbt
enabled or Not ,IF enable application send Establish Temporary connection to media server and plays the
ring tone to the subscriber and after ring tone terminates the call to the actual destination
Roles and Responsibilities:
1. Review and analysis of Requirement Specifications and High Level Design Documents
2. Contribution towards design and Review Writing
3. Preparing Unit Test Cases and Execution of the same.
4. Implementing the Product from scratch.
5. Preparing LLD and HLD for New Requirements.

4. 6. Helping New Joiner’s to understand the Product
USSD Gateway Plintron Global Technologies
Technology : GSM/SS7
Platform : C++,Unix
Product Description:
USSD gateway is a VAS product which interface with HLR to receive subscriber's USSD request and Based
on the request It communicates using XML with other VAS application like Billing, Back office and send
responds back to the user through HLR
Roles and Responsibilities:
1. Review and analysis of Requirement Specifications and High Level Design Documents
2. Contribution towards design and Review Writing
3. Preparing Unit Test Cases and Execution of the same.
4. Implementing New Feature Requirements
5. Preparing LLD and HLD for New Requirements.
Personal Profile:
Date of birth : 17th April 1987
Sex : Male
Current Address : 13/7 Albert Jesudoss colony 2nd Street Royapuram,
Chennai 600013.