16 Channels SMS USSD GoIP VoIP GSM Gateway With IMEI Changeable

16 Channels SMS USSD GoIP VoIP GSM Gateway with IMEI Change , 32 Port

Quick Details

• Brand name: DBL
• Model Number:GoIP-32
• type: VoIP GSM Gateway
• Protocol: SIP & H.323
• Support:VPN, Relay Encryption, VoS, Asterisk
• Warranty: one year

Overview

A VoIP GSM Gateway (GoIP) bridges voice communications between the GSM and the IP networks seamlessly.In principle, it consists of a GSM module and a VoIP module. With a SIM card installed, the GSM module registers to the GSM network for voice and SMS services.

GoIP comes with various models of 1, 4, 8, and 16 GSM 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.

Main 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

Main 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. 

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.

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 all DBL termial device anywhere; embeded remote control server; Remote sim auto configuration.

Technical Specfications