hw2gRadioApEDCAVoiceECWmin 1.3.6.1.4.1.2011.6.139.11.1.16.1.20

This object indicates the EDCA parameter ECWmin, namely, exponent form of Cwmin, for voice services on APs. ECWmin and ECWmax determine the average backoff time (ECWmax > ECWmin). The default value is 2.