... fax realy 1 to 4 E1/T1 ports VoIP SIP E1/T1 ISDN PRI Trunk gateway Support PRI ... aLaw, G.723.1,G.729,GSM,iLBC,T.38)Ideal PSTN termination for IP phones, VoIP gateway, IPPBX, PBX ... ideal PSTN trunking gateway for IP phones, PC phones and PBX bridge to VoIP services.InteroperabilitiesThe WSS100- ... ProcessingVoice Codec: G.711, G.729A, G.723.1, GSM, iLBCEcho Cancellation: G.168, tail length: 8/16 ...