VoIP-Gateway 8-port FXS, 1 port WAN 10/100/1000Base-TX, 4-port LAN 10/100/1000Base-TX
Nereden Alınır


DVG-5008SG converts voice traffic into data packets for transmission over the Internet. This gateway combines the latest Voice over IP technology with advanced communication features, and is fully compatible with the services of Internet telephony SIP. Gateways are high-density and low-cost, provide convenience and guaranteed savings for companies in need of frequent long-distance and international business calls. 
Savings and profitable investment
VoIP-Gateway DVG-5008SG with FXS-port provides an easy and inexpensive upgrade Internet telephony, allowing users to save previously purchased phones and fax machines. Investment protection is achieved through the use of existing infrastructure and the possibility of its gradual modernization. 
Guaranteed quality of voice 
Gateway DVG-5008SG transmits voice and fax messages in accordance with generally accepted international standards of voice and data services, such as G.722, G.711, etc. Support for Quality of Service (QoS) provides the communication quality comparable to analog telephony.
Call Functions
VoIP-Gateway DVG-5008SG with FXS-ports supports a variety of calling features that allow service providers to provide their customers with services such as call waiting, "Do Not Disturb", speed dialing, three-way conference, etc. Besides, there are many management functions SIP, including proxy support for outgoing calls, duplicate registration to the SIP proxy server / failover registration SIP, function dial plan (dial plan), and the function of the group call. Setting individual telephone connection through multilingual interactive voice (IVR) or the Web-interface.
Multiple simultaneous connections 
VoIP-Gateway DVG-5008S is equipped with eight FXS-ports that provide multiple simultaneous connections. For the organization of Internet telephony simply connect to these ports regular phones. These gateways are the perfect solution for companies to make phone calls to long-distance and international destinations. 
Gigabit ports to provide broadband Internet access
The gateway provides a convenient routing function, which allows users to get a joint office broadband Internet access. You can connect your computer to this gateway with built-in 4-port Ethernet and use the built-in NAT / DHCP-server to automatically access the Internet. 

Genel Özellikler

Fiziksel Özellikler
Physical interfaces
• WAN: 1 port 10/100/1000 Mbit / s Ethernet
• LAN: 4-port 10/100/1000 Mbit / s Ethernet
• Ports Phone: 8-port FXS (RJ-11)
The software features
Voice Features
• G.722, G.711 a / u-law, G.723.1, G.726, G.729A / B, GSM 6.10 Full Rate, iLBC13, 3 kbit / s
• DTMF detection and generation 
• Detect and silence suppression 
• Comfort Noise Generation (CNG) 
• Voice Activity Detection (VAD)
Echo cancellation • (G.165/G.168)
• Variable (dynamic) jitter-buffer
• Generate tone CPT (Call Progress Tone)
• Automatic or programmable gain control 
• Built-in local frequency converter
• Supports ITU-T V.152   
Phone features
• In-Band DTMF, Out-of-Band DTMF Relay (RFC2833 and SIP INFO)
• Support for DTMF / pulse dialing 
• Detection / Generation Caller ID (Caller ID):
  - DTMF
  - FSK-Bellcore Type 1 and 2
  - FSK-ETSI Type 1 and 2
  - FSK: the caller's name, number, date and time, vMWI
• billed pulses at port FXS:
  - Detection of reverse polarity
  - DTMF 12 kHz
  - DTMF 16 kHz
• Generation (FXS) POTS tone 
• T.30 FAX Bypass, T.38 Real Time FAX Relay
• Job modem protocol V.34 
• The signal ROH (Receiver Off-Hook, @ 480 Hz)
• Loop Current Suppression
• Diagnostics and Testing FXS line with a visual indication of errors
• Incoming calls:
  - Loopback-codec
  - Loopback-analogue
  - The voltage at SLIC
  - Wire a / b power from DC
  - Signal an incoming call
• Outgoing calls (Standard GR909):
  - REN
  - Disconnected
  - Danger high voltage direct current 
  - Danger high voltage AC
  - Wire a / b short-circuit
Supported SIP-methods
• Calls «Peer-to-Peer»
• Hold
• Call waiting / call return
• Call Pickup
• Parking / return call (requires SIP-server)
• Call forwarding (unconditional, busy, no answer)
• Call Transfer (with and without announcement)
• "Do Not Disturb"
• Speed ​​dialing
• Redial
• Three-way conference
• MWI (RFC-3842)
• Hot Line and Warm Line
Call Management
• Support for outbound proxy
• Up to three SIP-servers
• Re-registration to the SIP-server authorization fails
• The group call
• Privacy Mechanism / Private Extensions to SIP
• Session Timers (Update / Re-invite)
• Support for DNS SRV
• The types of calls: Voice / Modem / Fax
• Call Routing prefix
• Support for user-programmable dial plan
• CDR-client
• Create entries in the manual mode (for calls P2P)
• Support for ENUM and E.164 numbering standard 
Account Management
• Register on the basis of port 
• Register-based devices (general account)
• Mixed mode register (Hunt number for incoming calls, based on the port number for outgoing calls)
• Invite with Challenge
• Register for IP-address or domain name SIP-server 
• Support format RFC3986 SIP URI 
IP specification
• Support for IPv4, IPv6
• Support of network protocols: IP, TCP, UDP, TFTP, FTP, RTP, RTCP, ARP, RARP, ICMP, NTP, SNTP, SNMP v1/v2/v3, HTTP, HTTPS, DNS, DNS SRV, Telnet, DHCP-server , DHCP-client, STUN-client, UPnP, IGMP snooping, IGMP proxy
• Support for QoS:
  - WAN: DiffServ, IP Precedence, priority queues, Rate Control, 802.1Q (VLAN Tagging), 802.1p (Priority Tag)
  - LAN: Speed ​​Limit
• Support DDNS
  - Dyndns.org, TZO and Peanut Hull
Network Security
• VPN PPTP-client
• Authentication DIGEST
• MD5 Encryption 
• Protection against DoS attacks  
• Web-interface
• Auto-provisioning (HTTP / HTTPS)
• Telnet
• Software upgrade via FTP / TFTP / HTTP
• Backup and restore settings
• The Reset button to reset to default settings
• TR-069/104 (optional)
• SNMP V3 / V2c / V1
Standards SIP, Voice and FAX
• RFC1889 RTP: A Transport Protocol for Real-Time Applications
• RFC2543 SIP: Session Initiation Protocol
• RFC2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
• RFC2880 Internet Fax T.30 Feature Mapping
• RFC2976 The SIP INFO Method
• RFC3261 SIP: Session Initiation Protocol
• RFC3262 Reliability of Provisional Responses in Session Initiation Protocol (SIP)
• RFC3263 Session Initiation Protocol (SIP): Locating SIP Servers
• RFC3264 An Offer / Answer Model with Session Description Protocol (SDP)
• RFC3265 Session Initiation Protocol (SIP)-Specific Event Notification
• RFC3311 The Session Initiation Protocol (SIP) UPDATE Method
• RFC3323 A Privacy Mechanism for the Session Initiation Protocol (SIP)
• RFC3325 Private Extensions to the SessionInitiation Protocol (SIP) for Asserted Identity within Trusted Networks
• RFC3362 Real-time Facsimile (T.38) -image/t38 MIME Sub-type Registration
• RFC3515 The Session Initiation Protocol (SIP) Refer Method
• RFC3550 RTP: A Transport Protocol for Real-Time Applications. July 2003
• RFC3665 Session Initiation Protocol (SIP) Basic Call Flow Examples
• RFC3824 Using E.164 numbers with the Session Initiation Protocol (SIP)
• RFC3841 Caller Preferences for the Session Initiation Protocol (SIP)
• RFC3842 A Message Summary and Message Waiting Indication Event Package for the Session Initiation Protocol (SIP)
• RFC3891 The Session Initiation Protocol (SIP) "Replaces" Header
• RFC3892 The Session Initiation Protocol (SIP) Referred-By Mechanism
• RFC3960 Early Media and Ringing Tone Generation in the Session Initiation Protocol (SIP)
• RFC3986 Uniform Resource Identifier (URI): Generic Syntax
• RFC4028 Session Timers in the Session Initiation Protocol (SIP)
• Draft-ietf-sipping-service-examples-08 for call features
Network Standards
• RFC318 Telnet Protocols
• RFC791 Internet Protocol
• RFC792 Internet Control Message Protocol
• RFC793 Transmission Control Protocol
• RFC768 User Datagram Protocol
• RFC826 Ethernet Address Resolution Protocol
• RFC959 File Transfer Protocol
• RFC1034 Domain Names-concepts and facilities
• RFC1035 Domain Names-implementation and specification
• RFC1058 Routing Information Protocol
• RFC1157 Simple Network Management Protocol (SNMP)
• RFC1305 Network Time Protocol (NTP)
• RFC1321 The MD5 Message-Digest Algorithm
• RFC1349 Type of Service in the Internet Protocol Suite
• RFC1350 The TFTP Protocol (Revision 2)
• RFC1661 The Point-to-Point Protocol (PPP)
• RFC1738 Uniform Resource Locators (URL)
• RFC2854 The 'text / html' Media Type
• RFC2131 Dynamic Host Configuration Protocol
• RFC2136 Dynamic Updates in the Domain Name System (DNS UPDATE)
• RFC2327 SDP: Session Description Protocol
• RFC2474 Definition of the Differentiated Services Field (DS Field)
• RFC2516 A Method for Transmitting PPP Over Ethernet
• RFC2616 Hypertext Transfer Protocol -HTTP/1.1
• RFC2617 HTTP Authentication: Basic and Digest Access Authentication
• RFC2637 Point-to-Point Tunneling Protocol
• RFC2766 Network Address Translation-Protocol Translation (NAT-PT)
• FC2782 A DNS RR for Specifying the location of Sevices (DNS SRV)
• RFC2916 E.164 Number and DNS
• RFC3022 Traditional IP Network Address Translator
• RFC3489 STUN-Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)

Fiziksel Özellikler

28,7 x 16 x 3,6 cm
1300 g
• Input: 100 to 240 VAC, 50/60 Hz
• Output: 12 V DC, 2 A
• Operating: -10 to 45 ° C
• Storage: -25 to 75 ° C
• Operating: 0% to 90% (non-condensing)
• Storage: 0% to 95% (non-condensing)
• Approvals EMI: FCC part15 B, CE class B
• Safety Approvals: CE / LVD


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