... (G.711u/aLaw, G.723.1,G.729,GSM,iLBC,T.38)Ideal PSTN termination for IP phones, ... and measurement for all trunking gateways. WSS100-TG configured with one to four T1/E1 interfaces can maximally process 120 ... support CODEC (G.711, G.729A, G.723,iLBC,GSM), echo cancellation (G.168), DTMF relay (RFC2833), and ... Codec: G.711, G.729A, G.723.1, GSM, iLBCEcho Cancellation: G.168, tail length: 8/16/32 ...