Call from VoIP to GSM or GSM to VoIP
Auto check balance and recharge
Remote SIM Control
Outbound call from voip
Inbound call from gsm
Remote management
GSM Channels:4
Power Adapter: DC 12V/2A
CPU: ARM11/700MHz
RAM: 128MB
Flash:8M
GSM Frequency: 850/900/1800/1900MHz
Max power consumption: 12W
Net weight: 0.42KG
Size:25*14*2.5cm
Operating Temperature: 0-45℃
Working Humidity: 10%-90% non condensation
VoIP Protocols: SIP V2, H.323 V4
Audio Codecs: g711(alaw/ulaw), g729, g723.1
DTMF format: SIP INFO, RFC2833, Inband
Packet Loss Concealment
Programmable Jitter Buffer: Fixed, Dynamic, Adaptive
Network Connection: DHCP, PPPOE, Static IP
STUN Server
Support English, Chinese
Support Signaling encryption
Support media encryption
Support Media NAT Traversal
Support Remote control
The concept diagram below shows a simple VoIP network for call center application. It consists of a softswitch/IP PBX and VoIP clients such as an IP phone, a call center operator, and GoIPs. All VoIP clients are configured to register to the softswitch/IP PBX. For the GoIPs, each GSM channel is inserted with a valid SIM card in order to access the GSM network. Both incoming and outgoing calls between the VoIP and GSM/PSTN networks can now be realized.