CTI project

This project would be achieved in collaboration with the ALGO laboratory in EPFL.

Short description of some of the project steps:

• installation of a test SIP VOIP infrastructure in the premises of EPFL
• testing WiFi SIP phones in the WiFi network of EPFL (especially handover functions between base stations and the impact on the voice quality)
• development and implementation of voice quality perception measurement methods (ref www.PESQ.org)
• billing and quality monitoring issues

• development of a SIP phone
• software design
• hardware design
• SIP VOIP infrastructure installed in the premises of EPFL as a test-bed
• multi-path routing extension of streaming between UA and SIP server (multi-base station WiFi network of EPFL)
• injection of redundant packets with multi-path streaming at source node
• injection of redundant packets at intermediary nodes (network coding)

• development of a Least Cost Routing
• integration of the LCR routing tables with testbed SIP and Billing Servers
• cost evaluation of retail offers of operators of a given market (e.g. Swiss retail phone operators)
• consideration of call setup fees, call duration rounding, cost rounding, post call surcharges, etc in the cost evaluation
• consideration of Average Call Duration for each specific destination (about 800) in the cost evaluation
• consideration of call duration distribution per each destination

Marriage of the above listed three points via the testbed infrastructure, and integration of all projects into a single operating academic/industrial network

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