... GSM,iLBC,T.38)Ideal PSTN termination for IP phones, VoIP gateway, IPPBX, PBX accessEmbeded with RTP ... ;Compatible with asterisk,3CX,Yate based on IP PBX system;High PerformanceVoice processing capability is ... is the ideal PSTN trunking gateway for IP phones, PC phones and PBX bridge to VoIP services. ... class 4/5 switches such as those offered by Nortel, Lucent, Alcatcl, Siemens, Huawei, ZTE and ...