1 Stage/2 Stage Dial Balance Alarm Call Back Call Detail Record (CDR) Call Duration Limitation Call Progress Tone Generation Call Status Display Call Transfer Call Waiting Caller ID/CLIR Carrier Selection: Auto/Manual Configure backup/restore Firmware upgrade by HTTP/TFTP Gain Adjustment GSM/CDMA/UMTS Ports Group Manage Hotline Incoming /Outgoing Routing rules IP Blacklist Network Attack Alert NTP Open API for SMS and USSD Packet Capture PIN Modify Real Open API Protocol (Based on Asterisk) Send Bulk SMS Session Timer SIP Peer Mode: Support SIP Response Code Switch SIP server for IP phones: Support SIP Trunk: Support SMS Center SMS Sending and Receiving System Logs USSD VoIP Trunk Group Web based configuration White List and Black List