A DECT base station, wherein the DECT base station is installed with at least two voice codecs; and the DECT base station is configured to sequentially judge whether the voice codecs of the DECT base station match voice codecs of a handset according to a first codec information data packet sent by the handset, and when a matching is successful, send a response information to the handset to perform voice communication with the handset through a matched voice codec; wherein a priority order of the voice codecs of the DECT base station is defined in advance according to performance of the voice codecs and actual communication requirements; the priority order of the voice codecs of the handset is defined in advance according to the performance of the voice codecs and the actual communication requirements; wherein that sequentially judge whether the voice codecs of the DECT base station match the voice codecs of the handset according to the first codec information data packet sent by the handset, specifically is: according to the first codec information data packet, judge whether a first voice codec of the DECT base station matches the voice codecs of the handset based on the priority order of the voice codecs of the DECT base station, then when the first voice codec doesn't match the voice codecs of the handset, judge whether a next voice codec of the DECT base station matches the voice codecs of the handset, until one of the voice codecs of the DECT base station matches the voice codecs of the handset, or the matching of each voice codec of the DECT base station is finished; when the matching of each voice codec of the DECT base station is failed, determine that the handset cannot perform voice communication with the DECT base station. the DECT base station is installed with at least two voice codecs; and the DECT base station is configured to sequentially judge whether the voice codecs of the DECT base station match voice codecs of a handset according to a first codec information data packet sent by the handset, and when a matching is successful, send a response information to the handset to perform voice communication with the handset through a matched voice codec; wherein a priority order of the voice codecs of the DECT base station is defined in advance according to performance of the voice codecs and actual communication requirements; the priority order of the voice codecs of the handset is defined in advance according to the performance of the voice codecs and the actual communication requirements; wherein that sequentially judge whether the voice codecs of the DECT base station match the voice codecs of the handset according to the first codec information data packet sent by the handset, specifically is: according to the first codec information data packet, judge whether a first voice codec of the DECT base station matches the voice codecs of the handset based on the priority order of the voice codecs of the DECT base station, then when the first voice codec doesn't match the voice codecs of the handset, judge whether a next voice codec of the DECT base station matches the voice codecs of the handset, until one of the voice codecs of the DECT base station matches the voice codecs of the handset, or the matching of each voice codec of the DECT base station is finished; when the matching of each voice codec of the DECT base station is failed, determine that the handset cannot perform voice communication with the DECT base station.