Ava
E-mail Id: [email protected]
Contact No: 020********
Objective
My stated objective and focused approach is to work in an organization where I can acquire knowledge, fully utilizes my skills and get global work exposure.
Technical Skill
- Language: C, C++, Java.
- Databases: MS-Access, PostgreSQL.
- Operating System: MS DOS, Windows (9x, 2000, XP, 7), Linux.
- VOIP Products: SIP soft switch, Jain-Sip, RTP, RADIUS, IVR, VXML and MSCML.
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Certifications
- Oracle Certified Professional, Java SE 5 Programmer [SCJP].
- Mainframe certification [XXXX, Bangalore].
- Computer Hardware Service Engineering [XXXXX ACADEMY].
Professional Experience
- Working as Developer in xxxxxxx (xxxx tech), Since February – 2011.
- Worked as Engineer R & D in xxxxxx Technologies, June – 2008 to January – 2011.
Project Description
1. Conference Bridge
Description:
- The objective of Conference Bridge to enable participants to communicate each other via audio, this Conference Bridge supports only audio.
- IPMS (IP Media Server) are responsible for audio media mixing and playing IVR to participants.
- This Conference Bridge is available in two variant, Time based and Non time based.
- Number of participants depends on license port available in IPMS minus two; these two ports are reserved ports.
- In time based conference, whenever a user wants to join the conference he / she dials the conference bridge number, conference bridge will ask conference-id and check the conference –id given by the participant, if it is valid conference-id then conference bridge will ask for pin number and validates the pin number.
- And checks whether participant tries to join the before start time or after end time in that case conference bridge will send 480 temporarily is not available.
- If he or she call in time and if the participant is the first person to join the conference, conference bridge will play a welcome prompt, followed by another prompt to inform “ you are the first person to join the conference”, for remaining participants conference bridge players welcome prompt followed by a prompt asking the participant to record the name.
- Participant record’s name and press’s termination character, Conference Bridge now play the name to the entire participant’s in the conference.
- When End time reached, a conference bridge plays an end time prompt and closes the conference call.
Technical Description:
- Jain-Sip (API for implementing Sip in java).
- MSCML (For interaction between Conference Bridge and IPMS).
- Java (Language used for implementing Conference Bridge).
- RFC 3261, RFC 4722, RFC 4566.
2. Presence Server
Description:
- A presence server is a physical entity that can act as either a presence agent or as a proxy server for SUBSCRIBE requests.
- When acting as a Presence Agent, it is aware of the presence information of the presented through some protocol means.
- When acting as a proxy, the SUBSCRIBE requests are proxies to another entity that may act as a Present Agent.
- When a subscriber, wishes to learn about presence information from user, it creates a SUBSCRIBE request.
- This request identifies the desired presentity in the Request-URI, using a SIP URI, SIPS URI or a presence URI.
- When the presence server receives a subscribe request.
- Presence Server has to authenticate the user first, if authentication fails the presence server sends 407 Authentication Required.
- If authentication is successful presence server has to send 200 OK.
- Once response is successfully sent, Presence server has to send Immediate Notify.
- When the Subscription is pending then Subscription state header must be pending and the Status tag in PIDF must be offline.
- Otherwise the Subscription state header and Status tag in notify must reflect the current status of the presentity.
- Whenever there is change in status of presentity its corresponding watcher(s) must be notified about the new status.
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Technical Description:
- Jain-Sip (API for implementing Sip in java).
- Java (Language used for implementing Presence Server).
- RFC 3261, RFC 3856, RFC 4566.
3. VOIP Related Products
Description:
- Worked on developing, optimizing and adding features to various VoIP components like SIP based SoftSwitch, MediaProxy, IVR, SIP Call Server, Internal Radius Server.
- Some of the features include.
- Optimized SIP Registration of IVR service numbers through multiple contacts in single SIP Register message.
- Implemented P-Asserted Identity header for Sip Proxy.
- Changes to the Radius interface of the softswitch to improve performance.
- Calculation of various QoS based statistics through analyzing RTP and RTCP Streams.
- Fixed various race conditions and other issues in failover (both periodic state replication failover and event-based replication failover) of SIP-SoftSwitch and RTPProxy.
- Enhanced performance for IVR by implementing service specific registration.
Educational Qualification
MCA
Discipline: Computer Applications
College: XXXXXXX Institute of Management and Technology
Year of Graduation: 2007
Percentage: 69.81%
B.sc
Discipline: Computer Science
College: XXXXXXXX Arts and Science College, XXXXXXXX.
Year of Graduation: 2004
Percentage: 51.5%
H.S.C.
Discipline: State board
College: Government Boys Higher Secondary school, XXXXXXX.
Year of Graduation: 2001
Percentage: 53.58%
S.S.C.
Discipline: State board
College: Government Boys Higher Secondary school, XXXXXX.
Year of Graduation: 1999
Percentage: 70%
Personal Details
- DOB:29/1/1989
- Linguistic Abilities: English , Spanish, Chinesh .
- Permanent Address: XXXX