Feature
Call park, call forward, call transfer, DND, ring/hunt group, paging/intercom, Up to 3 password-protected conference bridges allowing up to 25 simultaneous PSTN or IP participants, supports up to 500 registered SIP devices/users, Up to 30 Concurrent SIP calls 66% performance if calls are SRTP encrypted, Up to 5 layers of IVR (Interactive Voice Response), Multiple configurable call queues, automatic call distribution (ACD) based on agent skills/availability/busy level, in-queue announcement, Supports any SIP video endpoint that using the H.264, H.263 and H.263+ codecs, Supports voicemail and fax forwarding to email, Wall mount & Desktop
Others
Network Interfaces: Dual Gigabit RJ45 ports with integrated PoE Plus (IEEE 802.3at-2009), NAT Router: Yes, Peripheral Ports: USB, SD, LED Indicators: Power/Ready, Network, PSTN Line, USB, SD, LCD Display: 128x32 graphic LCD with DOWN & OK button, Reset Switch: Yes, Video Codecs: H.264, H.263, H263+, QoS: Layer 3 QoS, Layer 2 QoS, DTMF Methods: In Audio, RFC2833, and SIP INFO, Network Protocols: Disconnect Methods: Call Progress Tone, Polarity Reversal, Hook Flash Timing, Loop Current Disconnect, Busy Tone, Media Encryption: SRTP, TLS, HTTPS, SSH, Caller ID: Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF, SIN 227 - BT,
Specialty
Zero configuration provisioning of Grandstream SIP endpoints, Strongest-possible security protection using SRTP, TLS and HTTPS encryption, Dual Gigabit network ports with integrated PoE+, Supports up to a 5-level IVR (Interactive Voice Response), Built-in call recording server; recordings accessed via web user interface, Supports call queue for efficient call volume management, Built-in Call Detail Records (CDR) for tracking phone usage by line, date, Multi-language auto-attendant to efficiently handle incoming calls, Integrated LDAP and XML phonebooks, flexible dial plan