... RADIUS billing interface for CDRAdvanced technologies including SIP protocol, Frequency domain echo cancellation and iLBC codec;Compatible with asterisk,3CX,Yate ... MIPS processing power, for full load voice processing to support CODEC (G.711, G.729A, G.723,iLBC,GSM), echo ... Channels), 2T1 (48 Channels), 4T1 (96 Channels)· Voice ProcessingVoice Codec: G.711, G.729A, G.723.1, GSM, iLBCEcho Cancellation ...