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Designing 802.11 WLANs for VoIP and Data


Lizzie Narv?ez, Jes?s P?rez, Carlos Garc?a, Victor Chi


Vol. 7  No. 7  pp. 248-256


VoIP transmission in a WLAN is becoming a necessity; nevertheless there is a very important problem, the fact that the typical access point (AP) distribution is not ideal to establish a proper communication in the WLAN, since they are deployed only for data transmission. This paper presents a procedure and its implementation in an experimental scenario for designing WLANs with VoIP support, using two of the most important current standards for WLANs: 802.11b and 802.11g. According to our results, design of WLAN for data and VoIP can be recommended in small places with standstill clients; results concerning to SNR, speed-distance between clients and APs vary depending on the APs’ brand and the type of wireless adapters used in the clients. The expected amount of calls was not obtained, because of this amount was not according to the bandwidth utilization published by the codecs.


WLAN, VoIP, 802.11b, 802.11g, standard