Yeastar NeoGate TG100 - Number of GSM channels (Max): 1 Network type: 850/900/1800/1900MHz Protocol: SIP (RFC3261),IAX2 Transport Protocol: UDP,TCP,TLS,SRTP DTMF: RFC2833, SIP INFO, In band Codec: G.711A/U law, G.722, G.723.1, G.726, G.729a. Echo Cancellation: ITU T G.168 LEC LAN: 1 (10/100Mbps) Network: Static IP, DHCP Client, Firewall, VLAN, DDNS, QoS, OpenVPN NAT Traversal: Static NAT, STUN Size: 110x70x24mm Power Supply: AC 100~240V/50~60Hz (DC 12V, 1A) Operation Range: 0° to 40°C, 32° to 104° F Storage Range: 20° to 65°C, 4° to 149° F Humidity: 10 90% non condensing SIP Server and SIP Trunk supported SIP Peer Mode supported Calling Type: VoIP to GSM, GSM to VoIP GSM Ports Group Manage, VoIP Trunk Group Incoming /Outgoing Routing rules SMS Sending and Receiving Send Bulk SMS Gain Adjustment USSD PIN Modify Carrier Selection: Auto/Manual Balance Alarm Caller ID/CLIR Black List Hotline Call Duration Limitation Call Transfer Call Back Call Status Display Call Detail Record (CDR) Call Progress Tone Generation Call Duration Limitation for SIM Card/Single Call LCR (Least Cost Routing) Top voice quality (EFR super sound) SIP Response Code Switch Open API for SMS and USSD Real Open API Protocol (Based on Asterisk) IP Blacklist Network Attack Alert System Logs . Item-Type: VOIP Phones