There has been a growing interest in recent years in developing real-time voice and fax communication software for use over the Internet. This paper discusses the design of an Internet Telephony Gateway (ITG) that is used to support the delivery of fax and/or voice services through the Internet to conventional telephones and fax machines on the Public Switched Telephone Network (PSTN). The inte...

N a near future, base stations in Europe and Japan will have to support at least the following communication standards: GSM, EDGE, UMTS-FDD and UMTS-TDD, adding BlueTooth for terminals. A software radio (SWR) approach should permit to make substantial savings by avoiding the duplication of the entire radio systems in the equipment. This will be beneficial for both OEMs and network operators and...

The system envisioned is an automatic collision detection and warning system relying on a GPS module and a GSM modem. The vehicle to be safeguarded is to be fitted with the system sturdily ensuring good mechanical coupling with the entire chassis. In the case of an anticipated accident, the system detects it using the fact that the vehicle would be suddenly decelerated in such a condition. An a...

Exper iments a r e conducted using a number of adaptive transmission systems that a r e suitable for th i rd generation personal communications networks (PCN) . I t becomes apparent that the selection of the t y p e of modem and number of modulation levels of the modem, the speech codec t o b e used, and whether t o deploy a channel codec, depends on the channel S N R a n d teletrafflc demand i...

Peat forest fire detectors need to be developed immediately due the frequency of peat fires in Malaysia during summer is very high. This can affect life and health surrounding population. Among them Ayer Hitam Muar Forest Reserve, Johor which almost 50,000 acres size experiences every year. However, monitoring management methods still improved terms speed, accuracy systematic channeling alerts....