SWG-M204W comes with 4 WCDMA Channels
WCDMA UMTS Band 850/1900Mhz (America)
GSM Band: 850/900/1800/1900MHz (America)
OpenVox SWG-M20x series wireless gateways include SWG-M202G/W/L and SWG-M204G/W/L. SWG-M20X series wireless gateways support multiple codecs, including G.711U, G.711A, GSM, G.722, G.726, G.729 multiple coding. The gateways support SMS messages sending, receiving, group sending and SMS to E-mail.
The SWG-M20x series gateways are 100% compatible with Asterisk, 3CX, FreePBX, FreeSWITCH SIP server and VOS VoIP operating platform.