BB-4304 is a GSM gateway that interconnects the H.323 and GSM networks. BB-4304 switches calls that come to and from VoIP and GSM networks. With built-in GSM modules inside, users only have to insert a SIM card into each card holder. These products are optimized for smaller service providers and medium-sized enterprises.

• 4 ports VoIP with built-in GSM modules
• Each channel supports GSM900, GSM1800 and GSM1900
• Standard 10 base-T Ethernet LAN port to connect to the IP network
• Works with any existing Ethernet LAN environment, routers, hubs and switches
• G.723.1(5.3k/6.3k),G723.1A(5.3k/6.3),G.729A,G.711,G729B voice encoding
• Optimized voice quality using advanced DSP technology
• T.38 Fax support (Near Future)
• Inband/Outband DTMF support
• VAD (Voice Activity Detection)
• Telnet, Console, Web management support
• TFTP, FTP support.
• Management port for command line interface
• User adjustable voice/DTMF volume
• Integrated echo cancellation(G.168)
• Silence suppression
• Comfort noise generation(CNG)
• Caller ID support
• Call Detail Records
• Easy set-up and configuration
• Flexible numbering, adaptable to existing numbering plan
• ITU-T H.323 Version 3 compliant
• Telnet, console, Web password authentication
• Configuration reset button
• Interoperates with most H323 based VoIP equipment
• OEM customization available
• Free software/firmware upgrades
• One-year warranty
• Answer Supervision
• IP Access List to bar unauthorised Call
• Flexible numbering, adaptable to existing numbering plan. Least Cost Routing, Incoming Dynamic Port Routing
• SIM card management including remote balance checking and top-up on the SIM card and auto notification

SPECIAL FEATURES

• Answer Supervision
  • GSM Supported.
• Voice Activity Detection
  • Determine Call connected based on Voice Activity.
• Incoming Dynamic Port Routing
  • Mainly used for Least Cost Routing and can determine call to route to particular channel by prefix.
• SIM Card Removed and Insert Detection
  • Capable of detecting SIM Card removed or inserted and will disable the port and enable the port automatically
• Balance Checking of SIM Card(Depending on the Mobile Operator( from Telnet
  Cellular Call Management
  • Capable of controlling Individual Port or Total Port Call count and Call Duration per day basis.
• Call Detail Records

• Standards
  • RTP/RTCP, Q.931, RAS
  • ITU H.323 v3, H.225, H.245
  • ITU G.729A/B
  • ITU G.723.1 (5.3Kbps/6.3Kbps)
  • ITU G.711
  • ITU G.168(25ms) Echo cancellation
  • Telnet, WEB, TFTP, FTP
  • DHCP, PPPoE, Static IP
  • V.17/Group 3 fax, T.38 Fax (Near Future)
  • IEEE 802.3
  • 10 /100 base-T
• User Ports
  • 4 GSM Channel 4 SIM Slot
  • 10 base-T Ethernet 2 Port (RJ45, WAN & PC)
• Network Port
  • Ethernet: 10 base-T; RJ-45 connector (WAN Port, PC Port)
• Management
  • RS-232C, 19.2 kbps asynchronous; DB9 connector;
• CODEC Options
  • G.711(Alaw/Ulaw)
  • G.723.1 (5.3kbps/6.3kbps)
  • G.729A
  • G.729B

• Power
• 100-250 VAC, 60 Hz, 60 VA
• DC 12V 2A Adapter
• Dimensions
  • 28cm W X 4.5cm H X 21.5 D
• Weight
• 1760g
• Operating Temperature
  • 32℉ to 131℉ (0℃ to 55℃)
• Operating Humidity
  • 10% to 85% noncondensing
• Storage Temperature
  • 32℉ to 149℉ (0℃ to 65℃)
• Storage Humidity
  • 5% to 90% noncondensing
• Accessories
• Power Adaptor
• LAN Cable
• Console Cable