Zaka Kiani

Software Architecture, Consultancy, Training, Software Design & Development Projects

Worked on the design and development of Distributed Transaction Manger, an application to manage all the activity within a single transaction until its life cycle, including database transaction, and provides commit/rollback feature. Database access handled using generically implemented database APIs that currently supports both Oracle and MySQL. Further databases support can be added. Implementation of USSD and SMPP protocol based dispatcher and application as a part of Money Transfer Application. Implementation of Process Monitoring application, use to monitor different applications running on a system and make sure to restart the applications if they crash or stop working normally. Leading a team of developers to implement SDP (Service Delivery Platform), a Programmable, Extensible and Enhance able Service Delivery platform that enables the CSPs to develop and integrate new services at a brisk pace, as per their business requirements using CCXML. Leading a team of developers to implement AAA Server, a Carrier Grade high performance & scalable Server that provides Authentication, Authorization, and Accounting over Radius Protocol.

Implementation of Media Server, based on MSCML (Media Server Command Markup Language) a SIP-based AS-MS protocol used to implement advanced conferencing and fax applications. Media Server is used along with SDP Call Control Servers and Softswitch to provide media proxy, media path control, encoding/decoding of audio codec (using Intel IPP suite). Media Server is built over SDP. Leading a team of developers to implement SBC (Session Border Controller), provides powerful border control functionality by allowing control and manipulation of signaling and media packets for secure VoIP communication. Implementation of different EAP Authentication schemes implemented as a library which has well-defined interfaces and can be used with different protocols for EAP-Authentication. Worked on the design and development of an Asynchronous Middleware for Protocol Servers (AMPS), to provide a completely portable development interface for the implementation of any sort of application-level protocols, more suitable for highly concurrent servers for application-level protocols in telecommunication. AMPS is especially suited for implementing protocol servers like SIP, H.323, Diameter etc. Worked on the design and development of FlashSIP (RFC 3261), a High-performance SIP proxy and registrar server built on top of SIP stack and the AMPS library & 4GSIP, an implementation of RFC 3261 compliant SIP protocol on top of AMPS library. Worked on the design and development of Mediation, a process that transforms the Call Detail Records (CDRs) or Usages Details Records (UDRs) from one format to other. Worked on the design and development of Advanced Softswitch offer real-time voice switches to a diverse range of ITSPs (Internet Telephony Service Providers) over IP networks.