DBL Technology GoIP - Supported Protocols; Hardware Features; Software Features

GoIP User Manual
http://www.dbltek.com
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1.2 Protocols
 TCP/IP V4 (IP V6 automatic adaptive)
 Dual VoIP protocols: ITU-T H.323 V4, IETF SIP V2.0
 Multiple Codecs: ITU-T G.711 Alaw/ULaw, G.729A, G.729AB, G.723.1 and GSM
 H.2250 V4
 H.245 V7
 H.235 (MD5, HMAC-SHA1)
 RFC1889 real-time digital transmission protocol
 NAT
 STUN
 Network Management Protocol (NMP)
 PPPoE Dial Up
 PPP Authentication Protocol (PAP)
 Internet Control Message Protocol (ICMP)
 TFTP
 Hypertext Transfer Protocol (HTTP)
 Dynamic Host Configuration Protocol (DHCP)
 Domain Name System (DNS)
 User Account Authentication (via MD5)
 Proprietary Relay Protocol (Avoiding VoIP Blockings)
1.3 Hardware Features
 ARM processor
 DSP for voice signal processing
 Two 10/100MB Ethernet ports (IEEE 802.3 standard) with status LEDs
 Quadband GSM module (850M 900M, 1800M and 1900M)
 External Antenna (Internal Antenna option for selected models)
1.4 Software Features
 LINUX OS
 Built-in Web Server for device configuration
 Built-in SIP Proxy (Simplified)
 PPPoE Dial Up
 Router function
 DHCP client & Server
 QoS (VLAN)
 VPN (PPTP)
 Online firmware upgrade
 Remote Control Mechanism for remote technical support
 Proprietary Auto Provisioning Mechanism
 Remote SIM function
 Short Messages (SMS) support (standalone and server based)