GOIP16 16 Port GSM Voip Gateway

These GOIP16 16 Port GSM Voip Gateway is a VoIP GSM Gateway for call termination (VoIP to GSM) and origination (GSM to VoIP). It is SIP&H.323 based and compatible with Asterisk Trixbox 3CX SIP Proxy Server VoipBuster. It can enable to make 1/4/8/16 calls simultaneously from IP phones to GSM networks and GSM networks to IP phone.

Features:
1/4/8/16 GSM channels up to 16 SIM cards
For call termination (VoIP to GSM) and origination (GSM to VoIP)
Standard SIP & H.323 protocol Communicates with other gateway or PC
Quad band IMEI changeable Remote Access
Support of SMB32 SIM Bank
Optional SMS termination
Allows your program send/receive SMS with AT command
Easy to install and administrate
Auto Balance and Recharge
Auto BTS changeable
Support one stage dialing
Support free mode-two stage dialing and assigned mode-one stage dialing
Call Back feature
All functions can be set on web
Provide CDR

Technical Specifications:
Protocols: SIP/H.323
DTMF sending: REC2833
No. of voice channels: 1/4/8/16
TCP/IP: IP/TCP/UDP/RTP/RTCP/CMP/ARP/RARP/SNTP
DHCP/DNSClientIEEE802.1P/ Q.ToS / DiffServ
NAT Traversal STUN uPnP
IP Assignment Static IP DHCP PPPoE
VoIP codec: G.711 PCM A-law/u-law (selectable)
G.729 Annex CS-ACELP at 8 kb/s
G.723.1 MP-MLQ/ACELP at 63/53 kb/s (optional)
Voice Quality VAD CNG AEC LEC Packet loss
Network bands: GSM850/900/1800/1900MHz
Configuration way: WEB interface