Four Channel’s GSM VoIP Gateway
4
¾
H.235 Standard
(
MD5
,
HMAC-SHA1
)
¾
ITU-T G.711 alaw/ulaw, G.729A, G.729AB, and G.723.1 Voice Codec
¾
RFC1889 Real Time Data Transmission
¾
Proprietary Firewall-Pass-Through Technology
¾
SIP V2.0 Standard
¾
Simple Traversal of UDP over NAT (STUN)
¾
Web-base Management
¾
PPP over Ethernet (PPPoE)
¾
PPP Authentication Protocol (PAP)
¾
Internet Control Message Protocol (ICMP)
¾
TFTP Client
¾
Hyper Text Transfer Protocol (HTTP)
¾
Dynamic Host Configuration Protocol (DHCP)
¾
Domain Name System (DNS)
¾
User account authentication using MD5
¾
Out-band DTMF Relay: RFC 2833 and SIP Info
1.3 Hardware Specification
¾
ARM9E Processor
¾
DSP for voice codec and voice processing
¾
Two 10/100 BaseT Ethernet ports with full compliant with IEEE 802.3
¾
LEDs for Ethernet port status
¾
Direct Connect Ethernet cable
¾
Four GSM Channels’ Connection
1.4 Software Specification
¾
LINUX OS
¾
Built-in HTTP Web Server
¾
PPPoE Dial-up
¾
NAT Broadband Router Functions
¾
DHCP Client
¾
DHCP Server
¾
Firmware On-line upgrade
¾
PSTN Caller ID transmit
¾
Multiple Language Support
¾
Supported call divert
¾
Supported PSTN auto call out to PSTN
¾
Supported Multi_devices Cooperate Mode(Group Mode)
¾
Supported SMS call out