Specification :

The Quad-Band GSM over VoIP gateway has been designed for user to make calls and receive calls from a cellular phone via the internet using VoIP ( SIP/ H.323) .

Target Application
GSM Connectivity for IP PBX / Asterisk
Mobile IP PBX
GSM VoIP Gateway
GSM Callback Services ( Optional)

Features FXS interface ( for analog phone or PBX CO line)
Calls from cellular over VoIP
Calls from GSM network to the GSM VoIP Gateway unit provides a VoIP dial tone
SMS Server for SMS sending & receiving
Dialed number restriction, evaluation and modification
Easy & comfortable maintenance, configuration and upgrade
Block / Allow Policy for termination / origination

IP Specifications
H.323 v2/ v3/ v4 and SIP ( RFC 3261) , SDP ( RFC 2327) , Symmetric RTP,
STUN ( RFC3489) , ENUM ( RFC 2916) , RTP Payload for DTMF Digits ( RFC2833) , Outbound Proxy Support.
Voice Codec: G.711( a-law / ¼ -law) , G.729 AB, G.723 ( 6.3 Kbps / 5.3Kbps)
WAN: Support PPPoE client, DHCP client, Fix IP Address, DDNS client

Call Features
Voice channels status display
Direct Dialing Mode : peer to peer call ( support IP Address Call or Domain Name Call)
Register Call Mode : register to SIP Proxy Server or register to H.323 Gatekeeper
DSP Adjustable volume : - 9 db ~ 9 db
Silence Compression / VAD
Auto Dial for speed
Dynamic Jitter Buffer
Hot-Line and Warm-Line Support

Configuration & Management
Web-based Graphical User Interface
Remote management over the IP Network
FTP firmware upgrade
Syslog client support
Support Management IP

General Specification
Compatible with GSM networks ( 900/ 1800/ 850/ 1900 MHz)
SIM: supports SIM card ( 3V)
1 WAN port, 1 FXS port
Radio interface: Quad-Band EGSM 900/ 1800/ 850/ 1900
AC power : AC100V-240V, DC12V/ 1.5A, 50/ 60 Hz
Temperature: 0° C ~ 40° C ( Operation)
Humidity: up to 90% non-condensing
Emission: FCC Part 15 Class B, CE Mark
Dimension : 170 x 100 x 35 mm
Weight: 200g