Home page:http://www.dinstar.com
Headquarters: Shenzhen, China
E-Mail:support@dinstar.com / sales@dinstar.com
Telephone: +86 755 26456664
Introduction
Dinstar Technologies Co. Ltd. is an industry leading manufacturer specializing in VoIP solutions and IP voice value-added services. Since its establishment 10 years ago, Dinstar has grown to occupy 80% of the ISP VoIP market in China, with annual revenues of around $20M USD. Dinstar has a professional, high-quality R&D team experienced in telecoms networks, data communication, mobile communication, and network integration. The product range includes E1/T1 gateways, VoIP GSM/CDMA gateways, access gateways, softswitches, IP phones, billing systems, and VoIP value-add solutions, which are feature rich and highly compatible.Dinstar's VoIP systems provide broadband voice application services and complete softswitch voice access system solutions to major operators including China Mobile, China Unicom and China Telecom. Through the deployment of Dinstar products, voice-based value-added services are being offered to a number of enterprises and governmental departments, as well as residential customers. Dinstar is dedicated to making use of innovative technology and excellent service to provide its customers with outstanding products that exceed their expectations.
Dinstar DWG2001/4/8 /16GSM/CDMA/HSPA VoIP Gateways
More calls than ever are being made/received using mobile phones, especially with the explosion of Smartphone's and flexible/home working. The DWG2001/4/8 SIP/GSM Gateways from Dinstar are a cost-effective SIP/GSM gateway for SOHO, SMEs and system integrators. The Dinstar GSM/VoIP gateways allow 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 DWG gateways are Quad-band GSM VoIP gateway that support 1-8 GSM channels / SIM cards. The DWG gateways are fully compatible 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
- Quad-Band GSM 850/900/1800/1900 MHz
- CDMA 450/800MHz
- 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
- Built-in PPPoE client for establishing DSL link connection with ISP
- DTMF Signaling via RFC 2833 or SIP Info
- LEDs provide operational status information
- Support for external antenna
- PIN support for locked SIM cards
- Enhanced (Carrier Grade) Echo Cancellation: ITU Rec. ...