Software Developer with 8+ years of experience in Telecommunication Software Development

9/2009 – 5/2013

1) Development of SMS-GMSC.
Description: Implemented SMS functionalities of GMSC in order to deliver PTT Presence information to the Client involves querying HLR for the Location of the subscriber and delivering the message to the terminating MSC and Updating the status of the Mobile Station at the HLR.
Responsibilities:
• System Design from the Feature requirement Specification
• Module Design.
• Implementation and the Unit Testing.

2) Development of Prepaid Billing for PTT User
Description: Implemented prepaid Billing System for charging PTT Prepaid Subscriber involves communication with the Prepaid Server and Tariff Management for the each subscriber.
Responsibilities:
• System Design for the Prepaid Billing Application
• Design and Implementation of the CAMEL Protocol StateMachine.

3) Implementation of POC Floor Management
Description: Project Involved Floor Management for each POC user involved in a POC Conference Call.
Responsibilities:
• Design and Implementation of the Media Burst Control Protocol using RTCP.

4) Implementation of the POC Charging Application:
Description: POC Charging (online and Offline) implementation using Diameter Protocol
Responsibilities:
• System Design
• Diameter Stack integration
• Diameter Stack State Machine Design and implementation for the Accounting Application

11/2006 – 8/2009

SERVICE CAPABILITY INTERACTION MANAGER
Description: Service Capability Interaction Manager (SCIM) is a functional entity defined in the IP Multimedia Subsystem (IMS) architecture. TekSCIM employs the SCIM functionality to solve business problems found in the current generation wireless and Wire line network with a design approach that allows smooth evolution to the full IMS solution.
Responsibilities:
• Understanding of Requirements of CAMEL to SIP Convergence.
• Architectural Decisions.
• Design, implementation and unit tests.

AWP SS7
Description The AppWorks SS7 plug-in is designed to provide SS7 signaling support to any AppWorks based application that needs it. The plug-in provides the following capabilities:
• TPD based (Linux) SCTP over IP
• RFC 4666 compliant M3UA Sigtran stack
• Connectionless SCCP (ANSI & ITU)
• ITU TCAP

Voice Call Continuity Service
Description: VCC refers to the service using which a user with an appropriate subscription using a capable UE can do the following:
• Make voice calls using either IP-CAN or CS RAN
• Receive voice calls on either IP-CAN or CS RAN
• After having established a voice call on IP-CAN can continue the same call using CS RAN
• While using IP-CAN is able to receive all the supplementary services which were provided on CS RAN
Responsibilities:
• Design and implementation both CS Calls and IP Calls
• MAP,CAMEL message handling
• SIP Stack integration and State Management implementation

8/2004 – 11/2006

LUCENT GSM PROJECT
Description: Worked in the Base Station Controller (BSC) of Lucent Technologies for the Operations, Administration and Maintenance (OAM) module. The OAM of BSC is mainly responsible for configuring the logical and physical resources of itself and also the Base Transceiver Station (BTS) PCU in particular
Responsibilities:
• Feature Enhancement for Configuration and Performance Management

8) LUCENT BASE STATION ROUTER
Description: The UMTS BSR is a family of base station products targeted as an IP-based, decentralized, scalable, high-speed data only offer, evolving to support VoIP, complementary with Lucent’s IMS offer.
Responsibilities:
• Understanding of hardware functionality and platform interfaces to identify potential issues for HW integration for Base band, Amplifier and Filter HW units in BSR.
• Design, implementation and unit tests of HW autonomous objects.
• Application bringing up module involves estimation of the stack size for each application process & priority assignment.