The purpose of this thesis is to study three types of
bandwidth allocation strategies for a network integrating
voice and data, commonly referred to as Integrated Services
Digital Network or ISDN, using GPSS V simulati ons. The
strategies are Non-Boundary, Movable-Boundary, and Non- and
Movable- Boundary with Digital Speech Interpolation. The
theoretical behavior of each strategy is discussed. Exact
solutions for small systems with one or two slots is shown
along with approximations for larger systems. General
descriptions of the GPSS models for each strategy is
provided. The GPSS model source code for each strategy is
presented in the Appendix. Simulation is used to explore
the effects of the service time ratio a of voice and data on
system performance. Also, the performance of Time Division
Multiplex or TDM systems with 24 channels, commonly referred
to as Tl, is shown.