... .1,G.729,GSM,iLBC,T.38)Ideal PSTN termination for IP phones, VoIP gateway, IPPBX, PBX ... T1/E1 interfaces can maximally process 120 simultaneous VoIP calls. WSS100-TG embeds powerful DSP technology ... phones, PC phones and PBX bridge to VoIP services.InteroperabilitiesThe WSS100-TG supports use-wide ISDN ... ISDN PRI Standard: ANSI, NI-2, DMS, 5ESSĀ· VoIP ProtocolSIP (RFC3261) , 2976 Info Method, 3515 Refer ...