Product Description 4 x 10/100Mpbs VoIP port 1 x 10/100Base-T Ethernet port Flexible calling rules Auto Provisioning Answer Detection Attack Alert Auto Provisioning with Yeatsar PBX Backup and Restore Call Back Call Detail Records Caller ID Display Firewall Firmware Upgrade by HTTP/TFTP Hangup Detection Hotline IP Blacklist Nat Traversal Packet Capture Tool Programmable AC Impedance System Logs Two-stage Dialing Simple and Easy High Performance
