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In wireless network, it is difficult to provide reliability, especially in sensitive environment where interference and intermittent delay in transmission of packets are highly risky. This paper describes an architecture which ensures reliable data and voice communication in a hospital environment. The main requirement is there should not be any interference between radio frequency of the voice with that of medical equipment. This uses limited power for the transmission of packets and cost effective since it uses traditional PBX instead of IP telephony systems. The topology of this architecture does not require any special equipment.
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