Feature
Built-in call recording server; recordings accessed via web user interface, Supports up to a 5-level IVR (Interactive Voice Response), Dual Gigabit network ports with integrated PoE+, Strongest-possible security protection using SRTP, TLS and HTTPS encryption, Supports up to 800 users, 50 SIP trunk accounts, up to 100 concurrent calls, Zero configuration provisioning of Grandstream SIP endpoints
Others
Call Features: Call park, call forward, call transfer, DND, ring/hunt group, paging/intercom etc, Customizable Auto Attendant: Up to 5 layers of IVR (Interactive Voice Response), Caller ID: Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF, SIN 227 - BT, Mounting: Rack mount & Desktop (UCM6208), Disconnect Methods: Call Progress Tone, Polarity Reversal, Hook Flash Timing, Loop Current Disconnect, Busy Tone, Network Protocols: TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, SIP (RFC3261), STUN, SRTP, TLS, LDAP, DTMF Methods: In Audio, RFC2833, and SIP INFO, Video Codecs: H.264, H.263, H263+, Reset Switch: Yes, LCD Display: 128 x 32mm graphic LCD with DOWN & OK button, LED Indicators: Power/Ready, Network, PSTN Line, USB, SD, Peripheral Ports: USB, SD, NAT Router: Yes, Network Interfaces: Dual Gigabit RJ45 ports with integrated PoE Plus (IEEE 802.3at-2009), PSTN Line FXO Ports: 8 ports, Analog Telephone FXS Ports: 2 ports (both with lifeline capability in case of power outage)
Specialty
Supports call queue for efficient call volume management, Built-in Call Detail Records (CDR) for tracking phone usage by line, date, etc, Multi-language auto-attendant to efficiently handle incoming calls, Integrated LDAP and XML phonebooks, flexible dial plan, Supports any SIP video endpoint that using the H.264, H.263 and H.263+ codecs, Supports voicemail and fax forwarding to email