Design of Five Port Router for 3x3 Mesh Network Using Verilog

With technological advancements, a large number of intellectual property (IP) cores can be integrated into a single chip. As a result, communication between these cores is critical. Such communication is achieved using Network on Chip (NoC) technology. NoC is an on-chip packet-switched network with IP cores connected to the network via interfaces, and packets are sent to their destinations via a multi-chip routing path. A router is the essential component of the NoC architecture, it must be designed efficiently to build a competitive NoC architecture. Verilog is used to design the router which supports five parallel connections. It uses store and forward type of flow control, round-robin arbitration, and deterministic XY routing. The building blocks of the router are FIFO, arbiter, and crossbar. The proposed architecture of the five port router is targeted to the Spartan 6 XC6SLX45 FPGA design platform and simulated in Xilinx ISE 14.5 software.

Gateway between XMPP & SIP for Extensible Messaging and Voice over IP

Services and applications for real-time communications are developed during the last decade in two different contexts with almost opposite approaches. On the one hand, tele-communications companies have developed technologies supported the session initiation protocol (SIP), within the first place to re-implement the normal telephony service on the web, infrastructure, thus replacing the expensive circuit-switched network, but also enabling new communication channels like presence sharing and instant messaging. On the opposite hand, communities of open source developers have driven the evolution of open communication tools like e-mail and discussion systems towards the extensible messaging and presence protocol (XMPP). While the 2 worlds have virtually ignored one another for years, basically replicating the identical set of features, recent events within the industry have revealed a stimulating convergence between such technologies that within the near future is probably going to form them integrate. The project “Implementation of gateway between XMPP and SIP” is an effort to review various open source internet multimedia protocols like XMPP, SIP, RTP, MSRP et al. and their implementation into the $64000 environment and studying its actual working. The proposed system provides the features of audio call, and video call together with the features of conferencing, instant messaging, and presence.