... E1/T1 access, and groups and binds channels.Provides the VoIP function over the E1/T1 line.Provides the ISDN PRI ... interface managementVoiceRTP, SIP, SIP AG, IP PBX/TDM PBX, FXO/FXS, VoIP/conference call3GCDMA 2000 EV-DO Rev A, WCDMA, individual 3G ... , FR QoSVoiceRTP, SIP, SIP AG, IP PBX/TDM PBX, FXO/FXS, VoIP/conference callSecurityACL, firewall, 802.1x authentication, MAC address authentication, Web ...