With the introduction of different wireless communication technologies, the demand of users for real time services like voice along with data called VoIP is increasing tremendously. In order to provide high quality services, the new technologies like WiMAX have to consider all the quality parameters attached with a service. Thus, the paper discusses the WiMAX support to such services along with all the possible features of VoIP, its quality parameters like delay, jitter, throughput, etc. and emphasis on what work has been done in this perspective so as to improve the quality of the VoIP traffic by highlighting the various aspects, methodology and limitations of previous work in this field. It has been shown that there still remain some issues and considerations, which could be taken into account so as to have high quality VoIP traffics.
Access Service Networks (ASN):It comprises of number of transceivers called as base stations BS and the SSs. The communication is possible through the electromagnetic waves known as radio frequencies, on which the information is carried, the BS are used for this purpose. The subscriber stations are the devices through which the user access the service, which could be a mobile phone, laptop, dongles etc.
Connectivity Service Network (CSN):It is the core network which is the fundamental wireless communication providing network or the standard network 2G, where all
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