HDSL2 Simulation Project Proposal --------------------------------- The project we are proposing would pick up where the Spring 1998 team left off. In short, we will simulate the start-up portion described in the draft HDSL2 standard[1] and add it to the simulation completed last semester. A diagram of the start-up state machine taken from [1] follows for reference. We will continue to use Ptolemy as our development system. We believe that the start-up sequence will be modeled best in the finite state machine domain (FSM). Because the simulation last semester was done in the synchronous dataflow domain (SDF), we anticipate mixing these models to complete the project. The first step in this development will be to obtain and understand the transceiver implemented last semester. After it is understood, we will develop two galaxies based on the transceiver, one for the customer interface (H2TU-R) and one for the digital network interface (H2TU-C). Each of these are needed because they each play a complimentary role in the start-up sequence. We will then add the start-up sequence components to each of these (H2TU-R and C). Finally, we plan to simulate a full-duplex communications session. This will be done by connecting the H2TU-R and C modules together, adding channel impairments between them, and running the system for a specified amount of time. References 1. M. Rude, "Draft for HDSL2 Standard," ADC Telecommunications, T1E1.4/99-006, Jan. 1999.