Important Note ：All GoIP and Simbank devices are not sold or used in mainland China, Hong Kong, Macau, or Taiwan

The GoIP comes with various models of 8, 16 and 32GSM channels. When integrating in a VoIP system, GoIP is highly scalable in meeting customer's requirement on the number of channels (lines). In addition with its power functions, high voice quality, and low price, GoIP is an inevitable choice of many system integrators, call termination operatiors, small companies, and individuals.

Key Functions

 - GSM Carriers and Base Stations Optional

 - Sending SMS / USSD via built-in webpage or SMS Server

 - Remote SIM

 - Auto balance check and recharge (prepaid SIM)

 - Call time restrictions

 - Remote Control Management

 - Relay Server support for NAT and encryption of IP packets

 - PPTP VPN and Relay Encryption

 - Built-in SIP Proxy for peer-to-peer operation

 - GSM Quad Band: 850 / 900/1800/1900 MHz

 - Call forward from GSM to VoIP and VoIP to GSM

 - Call Back

Key Advantages:

 - Lightweight and Portable

 - Easy to install and administrate

 - IMEI Changeable

 - GSM Base Station Optional

 - Support SIM Bank/ SIM Sever

 - Manual/ Automatic Selection Operators

 - Sending and Receiving SMS and USSD (Web Interface)

 - Flexible Dial plan fo number alternation, call screen.

 - Flexible configuration modes.

 - All functions can be set on web.

 - Provide CDR report

Free Software/Server:

Remote Control Server----Access Interface Remotely.

Relay Server----Relay Encryption( Make Terminals Traversal the NAT without STUN and Outbound Proxy)

SMS Server----Remote SIM cards; Send Bulk SMS; Provide CDR and ASR; Auto Balance and Recharge.

SIM Server----Remote SIM Cards on Duty; Set GSM Group( Assign several SIMs per GSM Port); Set talk time per SIM, Set Day of week, time range; Monitor CDR, ASR, ACD.

Autocfg Server---- Maintence anywhere; embeded remote control server; Remote sim auto configuration.

Protocols: SIP/H.323:

TCP/IP:IP/TCP/UDP/RTP/RTCP/,CMP/ARP/RARP/SNTP, DHCP/DNSClient,IEEE802.1P/Q.ToS/DiffServ. NAT Traversal, STUN, UPNP.

IP Assignment, Static IP, DHCP, PPPoE

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.