Telephony • Voice Features • Voice Coding G.711, G.726 (16, 24, 32, 40 Kbps), • G.729, iLBC (13,33 kbit/s, 15,2 kbit/s); (RFC 3951, • ITU-T: G711, G.726, G729 • Annex A; IETF; ITU-T, Bellcore GR.506, GR.181; ITU-T G.168-2000, 2002; • ETS_300659_1,2,3; A-law, m-law coding) • NAT traversal (both manually and STUN) VAD, • CNG, G.168 echo cancellation • PBX Features • Multilevel auto attendant with Interactive Voice Response (IVR) and VoiceXMLv2 support • Voice mail with SMS notification • Directory assistance • Call hunting, call blocking Call statistics • Unified messaging • T.38 fax, fax relay and clear channel fax • Unified Fax Messaging • Dial plans (call routing) Time of day routing • Multiple user extensions (up to 100 virtual extensions) • Connectivity • System Capacity • 6 simultaneous IP-PSTN calls Premise Connections • 1 Ethernet 10/100BASE T port (RJ45) • Uplink Connection • 6 FXO ports to the Central Office (RJ11) • 1 Ethernet 10BASE T (RJ45) • Billing Radius Client (RFCS: 2865, 2866) • System • Management • WEB interface accessible from LAN and WAN • (HTTP/HTTPS), the WAN management access can be switched off • Password control • Remote diagnostics and software upgrade • Downoad/restore configuration • Reset button with factory reset option • Diagnostics/Testing • LEDs: Busy, Info/Fault, FXO1, FXO2, FXO3, FXO4, FXO5, FXO6, LAN, WAN • Remote testing and VoIP diagnostics • Power-up diagnostics

The Quadro 16x IP PBX is destined for the small and SMB business. Like its smaller companion IP PBXs, it is an IP router, SIP gateway and IP PBX all in one package. The Quadro 16x is equipped with sixteen FXS ports for connection of standard analog POTS phones or fax machines. 18 additional SIP IP phone ports can be configured as local extensions. In addition, there are four FXO ports for connection to the PSTN or legacy PBX. With a built-in QoS router, your LAN and voice traffic can be routed to the Internet (or VPN), eliminating the need for an additional IP router

In addition to the features of the 2x and 4x, the Quadro 16x adds hunt grouping, and a USB port for voicemail memory expansion. With the purchase of license keys, the Quadro 16x can expand to support 32 more IP phone extensions, bringing the total to 66 analog and IP extensions.