... interface, and the other is the secondary interface.Supports GSM/GPRS/EDGE.Supports HSPA+/HSUPA/HSDPA/WCDMA.Provides Mini-USB ... client, NAT, Sub interface managementVoiceRTP, SIP, SIP AG, IP PBX/TDM PBX, FXO/FXS, VoIP/conference call3GCDMA 2000 EV-DO Rev A ... and traffic policy), HQoS, FR QoSVoiceRTP, SIP, SIP AG, IP PBX/TDM PBX, FXO/FXS, VoIP/conference callSecurityACL, firewall, 802.1x authentication, ...