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Bikrama K.L PAGE 1 OF 6
Bikrama Keshari Lenka
Bikrama.lenka@gmail.com
Mob : 9900583390
SUMMARY:
My Career spanning of 12.9 years was mainly focused on telecommunication Product Engineering,
Including Mobility Management, Call processing, SIP gateways, IP PBX, Real time analytics,
Virtualization, IMS, RCS and Security for real time enterprise grade products. I am an innovative
software engineer with extensive experience in providing Solution approaches, System requirements,
Technical architecture artifacts and Worked in direction of bridging the business and technical
communities. I am currently working as Solutions Architect with experience in providing solutions to
complex and large scale product development as well as manage delivery of high quality products. My
experience in both technical and management domain enables me to deal with complete spectrum of
software delivery process starting from conceptualization to deployment.
EXPERIENCE SUMMARY:
 Aricent Bangalore ( Job transitioned from Motorola) Jan 2013 – Till Date
 Motorola Solutions ( Motorola India Pvt Ltd): March 2006 – Dec 2013
 Flextronics Software systems : Jul 2004 To Mar 2006
 Saskencommunication Technologies ltd : Sep 2003 To Jul 2004
 STG technologies Limited : 6 months
EDUCATIONAL BACKGOUND:
 Masterof Computer Application – 2002. (Batch Topper). 76%
o IGIT Sarang - Orissa
 Bsc – 1998 (Stewart Science College – Orissa ) 71%
 +2 Sc – 1994 ( Ravenshaw College – Orissa ) 61%
 10th – 1992 ( Nuabazar High School ) 74%
ACCOMPLISHMENTS:
 Got selected in Aricent SPARK innovation forum
 Filed more than 20 Invention disclosures for Motorola Solutions out of which 5 are implemented
as Product features.
 Awarded as one of the “Motorola Solutions - Leading innovators of 2012”.
 Got multiple WoW awards in Aricent for designing and developing stable solutions and smart
implemenation.
 Got awarded for zero defect delivery for a system release.

ROLES AND RESPONSIBILITIES:
 Involved in all aspects of program lifecycle starting from creating Customer proposals, High level
solution design, Estimates, Project plan and Risk mitigation strategies.
 Delivered large scale software development projects utilizing Waterfall, V-Model and Agile-
Scrum methodologies. Consistently delivering on-time, on-budget with zero defect initiative.
 Responsible for preparation of Engineering Requirement Specifications, Software Architecture
documents, Box requirements and Design plans.
 Investigated and collaborated with teams to resolve system, deployment and customer/field issues
 Leading the team of more than 20 Senior Developers who lead multiple projects simultaneously.
 Responsible for Analyzing & prioritizing defects and Customer Problems, and facilitating the
team in developing first time right solution.
 Conducted critical/thorough reviews of system/box/test documents to reduce errors and defects in
system test.
 Architected and developed softwares on Wireless mobility management, Call processing in PTT
systems like iDEN, Capacity improvement projects, QoS, Computer telephone Integration, Real
time analytics, GSM SMSCs, IMS, SIP, ISDN, LTE, EPC, and RCS domain.
 Woked on opensource products like Apache Storm, Kafka, Asterisk, Kamailio and JOYN.
TECHNICAL SKILLS:
Programming Skills
 C, C++,SDL, Java, Pyhton, shell scripts.
 Ubuntu, CentOS, Embedded Linux, Windows
 Open source server development like Kamailio, Asterisk,
Apache Storm, Kafka, JOYN, SIPp, Openstack.



Domains
 iDEN ( Motorola Proprietary Network )
 GSM, SS7, GGSN, PDN, PCRF, MME, LTE and UMTS
inter working, 3GPP specs.
 SIP , IMS , SNMP, Diameter ( RFC 3588), MSRP , SDP
 ATCA, Cisco Switches, Network Management
 Call processing, Mobility Management, Policy Charging and
QoS.
 Voice and data Surveillance
 Real time data analytics using Storm and VoLTE RCS.
 Computer Telephone Integration and VOIP gateways. IP
PBX system.
 Virtualization using KVM , QEMU and VmWare.
Tools:
 Ethereal, Wireshark
 DOORs, Reqtify , Valgrind ,Klockworks , Flexlint,
Wireshark,
 Vi editor, gdb , Eclipse
Version Control System:  Clearcase
Designing Tool  SDL, UML, OOPS and Design patterns
Project Management
Tool
 V model, AGILE, SCRUM, Kaizen and Lean Six Sigma.

PROJECTS DELIVERED:
 Aricent VoLTE/IMS RCS Server Development:
 Description:
This project requirement was to developm a stnadalone single box RCS server based on both VoLTE and
IMS core. The server was developed based on GSMA RCS 5.2 spec and supports the RCS features like
1-1 chat , Group chat, file transfer, store and forward, delivery display notification, Interworking with
legacy SMS, Capability discovery, PNBs, security and privacy etc. The server supports both OMA
Simple and CPM interworking functions. Kamailio opensource servere was used as a base. Ad-Hoc
group chat feature is added from the scartch and seamlessly integrated with the existing functionaliy of
the other features provided by Kamailio.
 My Role:
I have worked as Technical Architect and for this feature. I was involved in this project starting from
design to implementation. I have created the specs for the client based on GSMA RCS specs. The
Kamailio open source server is used as a base and top of that significant new changes including addition
of new modules are done to support desired RCS features.
 Language: C, C++
 Platform: Andriod, CentOS, Ubuntu and Kamailio
 Duration: 6 months and Ongoing.
 Technology: SIP, IMS, LTE, GSMA RCS, MSRP , SDP, VoLTE
 Client: Aricent
 Smart Meter reading with realtime analytics :
 Description:
Smart meters are SIP end points and are smart electric meters and can upload data to a centralized
location. Requirement was to implement a real time big data analytics system which collects the meter
reading and provide real time analysis of the data. Example: At any time the system was capable of
which area is consuming how much energy and system was capable of notifying the meters also about the
high usage. It can generate monthly report and suggestion to lower the electric consumption. The system
is developed using Apache Strom and Cassandra. Its also extended to web interface also using Kafka
spouts. The system is made generic to plug and play with other big data analytics requirement without
much code change. A new design pattern is implemented to achieve the flexible design.

 My Role:
I have worked as Technical Architect and for this feature. I have created the spouts and bolts for the big
data analytics systems and created the user report generation design.
 Language: Java
 Platform: Ubuntu Linux
 Duration: 6 months.
 Technology: Apache Storm, Kafka, Big Data analytics, Real time data analytics.
 IP PBX and SIP to ISDN Gateway:
 Description:
ISDN to SIP gateway bridges the gap between the traditional telecom users with the latest IP based
Audio/Video conference systems. The gateway does the conversion from H.323 bases IP systems and the
ISDN based conference systems. ISDN being a traditional system has very less support as compared to
SIP and H.323 systems. The video is translated from H323 to H225. Mesh support was provided so that
some one can open multiple video outputs on same display device like a tab.
 My Role:
I have worked as Technical Architect and for this feature. I was involved in this project starting from
Customer proposal, estimation till the development.
 Language: C++, Java, Python
 Platform: Linux.
 Technology: H323, SIP, ISDN , H225.
 Client: Polycom.
 Unified PoC Solution:
 Description:
Unified PoC solution is a futuristic solution approach for combining different types of PoC solutions into
one core infrastructure. The Unified PoC solution will provide push to talk over cellular facility for
various kind of interfaces which includes but not limited to traditional PTT handsets, Enterprise systems
like scanners, RF ID scanners, PTT Web interface, Other PoC systems like Qchat, Mobile clients running
on different kind of platform including iOS, Windows NT, Android etc. This feature brings together PoC
service on various kinds of cellular technologies starting from GSM, LTE and Wifi and in other side IP
systems like IMS and internet.
This feature also enables 4G network like LTE and iDEN network inter working so that subscriber from
each side can call each other using iDEN dispatch capabilities. This feature ensures QoS for signaling
and bearer path for all dispatch calls according to 3GPP recommendation. This feature uses the 3GPP
PCC specs and IETF Diameter ( RFC 3588) protocol to ensure QoS for calls.

 My Role:
I have worked as Technical Architect and for this feature. I was involved in this project from System
requirement creation till development. I have created the system architecture documents and Software
design to develop this feature. I have coordinated with different architects of different technologies and
combined the solutions for LTE, SIP and Android systems and came up with the overall architecture of
Unified PoC solution.
 Challenges and Learning:
This project needed collaboration among different teams located in different geographical location each
owning different technology. Different kind of technologies was involved out of which I was new for
some like Mobile Client interface. The core system demanded a convergence of all interface with the
core system, where all interfaces working with their corresponding technology and the core supporting all
in a synergy. I learned how to create a seamless system design and creating an architecture where various
system components can be reused to create one core system. I learned to define interfaces for various
technologies and got exposure to new technologies. The interfaces include the Android Client API to SIP
conversion. SIP messages to iDEN messages conversion. The WEBRTC application to iDEN messages
conversation. The OMA PoC messages to SIP message conversion. I established the mobility
management and call processing design for the core infrastructure. Due to good work in this project I got
opportunities to work with Motorola wide global system engineering team.
 Language: C, C++, SDL, UML
 Platform: Linux on ATCA 7367 blade.
 Technology: LTE, SIP, OMA PoC, 3gpp.
 Client: Motorola Solutions.
 DispatchApplication Processor( DAP ) for IDEN:
 Description:
DAP is same as MSC in GSM system or MME of LTE system. Its responsible for mobility management,
Call processing, billing generation, surveillance metadata collection, signalling part of MSI PTT system.
DAP has interface towards EBTS, HLR, VPUs, Surveillance gateways and SIP gateways. DAP is the
core of the iden ptt systems. DAP supports 2000 simultaneous group calls and 16K simultaneous provate
calls. DAP is one of the best system created in history of telecommunication which is well known for its
reliability and quality of development. Since 25 years its remain unbeatable in its segement.
 My Role:
I worked as a developer till Architect of the DAP for 8 years and developed more than 15 features in
DAP. I owned multiple componenet of DAP and own all yhe system interfaces with other systems. I have
contributed as system engineer for new features and created multiple customer proposals and solution
designs.
 Duration: Continuous process since 8 years.
 Technology: iDEN .
 Clinet : Motorola Solutions

 Group calldetailed billing:
 Description:
Our system is capable of doing a group call where each originator can make a call to maximum of 1000
targets. This is a unique and most powerful feature of iDEN which no other technology in world can do.
This feature enables the operator to create billing for each talker in a group call which can involve 1000
participants and can go on for 3-4 hours. When this feature is enabled CDRs will be generated for all the
unique talkers in the call but when the feature is disabled only 1 CDR will be generated for the call i.e.
only for the Originator of the call.
.
 My Role:
I worked as a Technical Architect for this feature. I did the system design and interface design between
the billing parser and billing record generator. I was involved in defining the system requirement and
gathering customer requirements and creating a clear feature requirement for internal development teams.
I was also involved in designing the software to achieve the requirements.
 Challenges and Learning:
This is a unique project in sense that group calls can accommodate 1000s of talkers and it’s difficult to
keep track of each talker during the entire duration of call and maintaining the time taken for each talker
during the call. Another aspect was the interfacing with the billing parser which is a third party system
and we had to maintain the format of the CDRs same still providing information for each talker in the
CDRs. A very complex data structure was designed to accommodate the change and a new design
approach was formulated to create the CDRs in run time without impacting the performance of the
system. I learned to design a high available system and adapting design to minimize the overall changes
in the system. My design could reduce the cost of the project by 20% and due to perfect test case creation
we could successfully deploy the system without any defects. This exceeded the six sigma goal targets.
 Language: C, C++, SDL
 Platform: Carrier grade Linux on ATCA 7367, Cisco 7365 and Nortel Switches.
 Technology: Telecom billing.
 Client: KTP Korea.
 CapacityImprovement of Surveillance gateway:
 Description:
Surveillance gateway network element provides voice and data surveillance for the subscribers which are
under surveillance from the Police Department. Motorola sells this network element to various customers
according to the country specific surveillance rules. The default gateway is capable of doing surveillance
on 1000 unique subscriber and 100 simultaneous calls. This feature enhanced capacity to double the
current limitation and supports 2000 subscribers and 200 simultaneous calls surveillance.
.
 My Role:
I worked as lead design engineer for this feature .This feature was my concept and I had created the High
level solution document and got the project estimate approval from customer to develop the project. I did
the prototype and design of the solution and provided technical guidance to development and test team.

 Dispatchcall from Facebook
I developed this concept and created prototype to demonstrate how to do a dispatch call from Facebook.
This is based on one of my technical papers submitted in 2012. I demonstrated this feature in KTPO
Bangalore in “Motorola Srjana 2012” event where participants across globe demonstrate new concepts
and products.
An application runs in Facebook which provides a GUI where the user can make a call to any PTT
subscriber across globe.
The challenge here was to provide real time voice to the customer. This was achieved by designing a
vocoder, which converts PCM data from microphone to VSELP in the app itself and sends the VSELP
packet to the PTT network. Another challenge was to convert SIP messages to Motorola PTT proprietary
messages. A gateway was created to do the conversion.
 SMSC for Comverse:
 Description:
The Comverse SMSC is world’s one of the best short message service centers. The SMSC is capable of
handling group SMSs, planned SMSs, SMSs from external application to phone and vice versa. The
product interfaces with GSM, CDMA and ESME. I have worked on designing and developing the Store
and forward engine of the SMSC which takes care of delivery of SMSs to designated targets across all
networks.
 My Role:
I worked as technical lead for this feature.
 Language: C, C++,
 Platform: Linux
 Technology: GSM, GPRS, SMPP, P2P.
PERSONAL INFORMATION:
 Gender: Male
 Marital: Married
 DOB: 6th Feb 1978
Bikrama Keshari Lenka

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