... .GSM,CDMA,WCDMA VoIP gatewaty voip gsm gateway Key features:1.4 channels, 8 channels, 8 channels with 32 sim ... /900/1800/1900/2100MHzCall Control ProtocolsSIPVoice CodecsG.729A, G.723.1, G.711 a/ulawNetwork ProtocolsIPv4, TCP, UDP, PPPoE, DHCP, ... running indicatorPower Supply100-240VAC, 50 - 60 HzDimensions·Rack mountable 1U chassis(compatible with 19" Rack)·Width: 482mm·Height: 44mm·Depth: 210mmWeight2 ...