- 2G GSM Gateway 850/900/1800/1900MHZ
- 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
Incompatible with ATT network