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Hi, I am Businessman I found this sample from https://www.indomonster.com and think it might be useful to you. ------------------------------------------------------- DINSTAR DWG2004 VOIP GSM GATEWAY CAPACITY 4 GSM CHANNEL Dinstar DWG2004 SIP/ GSM gateway with 4 GSM channels Applications: SIP IP PBX GSM Trunk, SIP VoIP line Gateway, SMS Server Quad-Band GSM 850/ 900/ 1800/ 1900 MHz 1 year warranty against hardware defects SIP/ GSM gateway for SIP based IP PBX ( e.g. Asterisk® ) or VoIP line Back up solution in case of a PSTN/ VoIP failure Mobile IP PBX ( e.g. for trade shows, temporary offices, disaster recovery, etc.) SMS gateway for batch sending/ receiving text messages ( e.g. appointment reminders, customer order updates, remote/ field worker communications, etc.) GSM callback services Dinstar DWG2004 SIP/ GSM VoIP Gateway - 4 Channels Click to enlarge Dinstar DWG2004 SIP/ GSM VoIP Gateway - 4 Channels [ DWG2004] Dinstar DWG2004 SIP/ GSM gateway with 4 GSM channels Applications: SIP IP PBX GSM Trunk, SIP VoIP line Gateway, SMS Server Quad-Band GSM 850/ 900/ 1800/ 1900 MHz 1 year warranty against hardware defects 14 day money back guarantee 30 day email support for technical installation issues Product Overview More calls than ever are being made/ received using mobile phones, especially with the explosion of Smartphone' s and flexible/ home working. The 1U rack mountable DWG2004 SIP/ GSM Gateway from Dinstar is a cost-effective SIP/ GSM gateway for SMEs and system integrators, and also opens up new revenue generating opportunities for service providers. The DWG2004 allows a SIP based IP PBX telephone system or VoIP line to be connected directly to the GSM cellular network, which can dramatically lower the cost of mobile calls by taking advantage of lower mobile-to-mobile tariffs. The DWG2004 is a Quad-band SIP/ GSM gateway that supports 4 GSM channels / SIM cards. The DWG2004 works with Asterisk® based IP PBXs like Elastix® , trixbox® , and AsteriskNOW® , as well as other Open Source and proprietary SIP based IP PBXs, Switch, IVR, and VoIP gateway applications. Target Applications SIP/ GSM gateway for SIP based IP PBX ( e.g. Asterisk® ) or VoIP line Back up solution in case of a PSTN/ VoIP failure Mobile IP PBX ( e.g. for trade shows, temporary offices, disaster recovery, etc.) SMS gateway for batch sending/ receiving text messages ( e.g. appointment reminders, customer order updates, remote/ field worker communications, etc.) GSM callback services Technical Summary Voice codecs supported include G.723.1, G.729A/ B, G.711 ( a-law and u-law) Support for Fixed IP, DHCP, Automated NAT traversal using IETF STUN Protocols supported include SIP RFC3261, TCP/ UDP/ IP, RTP/ RTCP, HTTP, ARP/ RARP, ICMP, DNS, DHCP, NTP, TELNET, PPPoE, STUN Support for 4 GSM channels 1 hot-plug SIM card per GSM channel Quad-Band GSM 850/ 900/ 1800/ 1900 MHz Send/ receive batch SMS up to 300 characters, support for AT commands Unstructured Supplementary Services Data ( USSD) support Adjustable TX/ RX gain: -6db~ + 6db Offhook Auto-Dial Hotline service DTMF Signaling via RFC 2833 or SIP Info Built-in PPPoE client for establishing DSL link connection with ISP Quad 10/ 100 RJ45 ports, support router and bridge mode LEDs provide operational status information Support for external antenna PIN support for locked SIM cards Enhanced ( Carrier Grade) Echo Cancellation: ITU Rec. G 168, up to 128 ms tail size Adaptive Jitter Buffer, Packet loss concealment ( PLC) , Comfort noise generation ( CNG) , Voice activity detection ( VAD) HTTP Web configuration support Hardware Summary Rack mountable 1U chassis 4 hot-plug SIM card slots with external cover for easy access LAN interface: 3 x RJ45 10/ 100Mbps autosensing WAN interface: 1 x RJ45 10/ 100Mbps autosensing Operation temperature: 0° C to 40° C Storage temperature: -20° C to 70° C Humidity 5-90% ( non condensing) Weight: Gateway only - 4Kg, Package as shipped 4.85Kg Dimensions ( W x D x H) : 440mm x 305mm x 44mm Power: 100-240VAC; 50-60 Hz Power Consumption: 30W Certificates: CE, FCC, ROHS For detailed information, please go to http://www.indomonster.com/limkoindonesia/3161405
0.0142 194.163.150.105