200 User Asterisk base Advance IP PBX with 2-expandable PCI interface slots(FXO/GSM/ISDN), IETF SIP/IAX2, T.38 FoIP, TLS/SRTP, IP Stackable, High Availability, VPN, TR069, IPv6, SNMP and up to 60 concurrent calls.

Features:

• Intuitive, Ease-of-Use IP PBX Management
• Off-net Calling Capability, Call Restriction, Call Access Control
• Replacing Old PBX Easily without New Wiring
• Distributed VoIP Network Infrastructure
• Standard Compliance
• Green IP Office
• Full Security with VPN Support

System Highlights

• 60 concurrent calls and up to 200 registers
• HD voice codec G.722 for perfect voice quality
• Fax to Email and Email to Fax for green office
• Voicemail to Email for not missing any important message
• Paging and intercom function strengthens the work efficiency
• Built-in SIP Proxy Server following RFC 3261
• Multiple Language of GUI for international business
• Web-based Control Panel for easy configuration and management of the system
• Hardware Echo Cancellation module for great and smooth communication
• Strong security features protect your system from hacking
• Maximum 8 ports FXO/FXS/GSM (on 2 slots) 
• Records voice and voicemail to external USB disk 
• Quick Setup Wizard 

Codec and Protocol

• SIP 2.0 (RFC3261),IAX and Lync server compliant
• Audio Codec: G.711-Ulaw, G.711-Alaw, G.722, G.726, G.729, GSM, Speex and Opus 
• Video Codec: H.261, H.263, H.263+, H.264 and VP8
• DTMF: RFC 4733, SIP info, in-band and auto

Network and Security Features

• DHCP Server, DDNS Client (PLANET DDNS & Easy DDNS)
• SNMP v1/v2, IEEE 802.1Q of VLAN
• IPv4/IPv6, TR069
• Manual Configuration of Static Route Table
• Troubleshooting (Ping, Traceroute)
• VPN Server, VPN Client
• Refuse SIP Register DoS, 
• Refuse Abort Invite Dos
• Refuse SSH Login DoS
• Firewall and enhances HTTPS connection

PBX Features

• SIP Register with UDP/TCP/TLS
• One Touch Recording
• Mobility Extension
• Black List
• BLF (Busy Lamp Field)
• CDR (Call Detailed Record)
• Conference Room 
• DID (Direct Inward Dialing Number)
• SRTP (Secure Realtime Transport Protocol)
• DND (Do Not Disturb)
• IVR (Interactive Voice Responses)
• Follow Me, Call Spy and PIN Set
• Distinctive Ringtone
• Multi-language System Prompt
• Phone Book, Speed Dial
• Ring Group, SIP Trunk
• Skype for SIP, Smart DID, System Log
• T.38 fax (pass-through), voicemail and voicemail to e-mail

Call Features

• Call Back, Call Forward, Call Group
• Call Hold, Call Paging and Intercom
• Call Park, Call Pickup, Call Queue
• Call Record, Call Route, Blind Transfer 
• Attend Transfer, Call Waiting
• Caller ID, Dial by Name 
• Customized IVR, On-hold Music, Transfer 
• Three-way Conferencing, Video Call