EUSSO Launches the 4-FXO VoIP Gateway with VPN Router 2008/01/23


EUSSO UTG7104 series is a cost effective and highly reliable Voice over IP (VoIP) gateway integrated with broadband router switch that offers toll quality voice and real-time fax data over IP networks. It supports both SIP and H.323 dual communication models. With its embedded architecture, this device is ideal for VoIP applications associated with Small-Medium size Business (SMB), Remote Office and Branch Office (ROBO), and ISP/ITSP service markets.

UTG7104 series has user friendly interfaces and it may be installed easily and conveniently with VoIP management tools to yield immediate cost savings. Implemented with an efficient Real-Time Operating System (RTOS) and FLASH memory, UTG7104 series provides field upgradeable capabilities, so, it may be programmed with updated protocols or algorithms locally or via the network at anytime. It comes equipped with remote management capabilities, configurable signaling to work with PBX or telephone. Utilizing advanced VoIP related technologies, it includes various voice coders and fax algorithms, echo cancellation, Voice Activity Detection (VAD), Comfort Noise Generation (CNG), and packet recovery algorithms.

EUSSO's Internet Telephony Gateway family supports Voice over IP (VoIP), as well as Fax over IP (VoIP), and it seamlessly bridges existing PBX or phones with IP networks. Its scalability satisfies user's needs for system growth without additional software or complex integration. Also, it supports various types of network configurations and requires very little maintenance or administration. It is fully interoperable with world well-known VoIP gateways and PBXs. Furthermore, it coexists with broadband access devices for ADSL or CATV networks.


  • Supports SIP and H.323 dual mode communication for simultaneous VoIP call
  • Supports dual FXS/FXO or FXS/PSTN VoIP interface to connect between PBX and PSTN
  • Provides 4 ports different combinations of real-time voice and data in a single embedded box
  • I-WAN + 3-LAN switch embedded for ADSL/Cable modem broadband router with VPN function
  • Built-in Firewall, VPN, QoS, NAT Server, PPPoE, DHCP, and watch dog advanced functions
  • Supports multiple voice codec G.711, G.723.1, G.726, and G.729a/b and G.168 Echo Cancellation
  • Web-based configuration and management through user-friendly Web browser user-interface
  • Flexible registration up to 4 Gatekeeper or SIP proxy simultaneously for different VoIP Route plan
  • Supports User-definable Static Routing Table, Network Access Rules, and TCP/UDP Port Mapping
  • Built-in Watch Dog for auto recovery and Self Protection against DoS attacks

Application Diagram

VoIP Gateway Router with SIP IP PBX System Application Diagram

VoIP Gateway Router with FXS+FXO Ports Application Diagram

The VoIP Gateway with router making voice and data connectivity together with IP sharing router function.Telephone and fax can be served by FXS port and other FXO ports support telecom central office line or PBX.


VoIP Models Specifications
Model UTG7104-22R UTG7104-SR UTG7104-OR UTG7104-PR
VoIP Standard SIP / H.323 SIP / H.323 SIP / H.323 SIP / H.323
Voice Port (RJ-11) 2 –FXS + 2-FXO 4-FXS 4-FXO 4-FXS/PSTN
WAN Port (RJ-45) 1 x 10/100Mbps 1 x 10/100Mbps 1 x 10/100Mbps 1 x 10/100Mbps
LAN Port (RJ-45) 3 x 10/100Mbps 3 x 10/100Mbps 3 x 10/100Mbps 3 x 10/100Mbps
SIP, v2 (RFC3261), H.323, TCP/IP, UDP, FTP, PPP, HTTP, NAT, DHCP, PPPoE,
IEEE802.3, IEEE802.3u
Voice Processing Audio Codec:
  • G.711 A-Law /μ-law (64kbps)
  • G.723.1 (5.3 or 6.3kbps)
  • G. 726 (ADPCM 40, 32, 24, 16kbps)
  • G.729a/G.729b (8kbps)
Supports T.38 FAX Relay (96k, 14.4k)
Carrier tone detection and generation
Silence suppression and comfort noise
DTMF In/Out band Relay
DTMF/Call progress detection and generation
Q.931 Fast Star
Supports Caller ID generate and detect
Supports VAD, H.225, H.245, CNG, G.168, jitter buffer and programmable gain control
Voice Signaling Supports SIP and H.323 simultaneous VoIP calls
Supports SIP v2 stndard (RFC3261)
  • Outbound Proxy.
  • STUN Server
Register up to 4 Server simultaneously
Supports multiple dialing plan / call hunting group
Adaptive Jitter Buffer function
Built-in Web call Server function
Extensible by external IVR/CDR/Billing server for value-added application
Current drop and polarity reversal detection and generation on analog trunk interface
Selectable group or sequence ring the PBX when VoIP call in
IP screening table for authorized VoIP call in
Flexible Routing table and profile
Management Web interface management
Supports Auto-Provision System
Remotely configuration/Upgrade by Web UI or Auto Provisioning (HTTP)
Supports Call Detailed Records (CDR)
1 reset button for load factory default
WAN IP configure can be programmed by IVR via phone set
Built-in watch dog for auto recovery
Router Functions Supports Static and Dynamic IP from DHCP, PPPoE
Built-in DHCP Server
Dynamic DNS Support
Support Network Access Rules ( LAN to WAN or WAN to LAN )
Self-Protection against DoS Attacks
Supports NAT through function
NAT function: Virtual server, Port Mapping, ALG, DMZ, Static Routing Table
Firewall Option: Client Filtering, URL Filtering, MAC Control, Drop Port Scans
VPN Pass-Through (PPTP & IPSEC Pass Through)
Diagnostic LED Power, Status, Ready, Phone, Line, LAN, and WAN
Dimension 233 (W) x 153 (D) x 46 (H)
Operating Temperature 0°C~ 45°C (32°F ~ 113°F)
Humidity 0 ~ 90% (Non-Condensing)
Power DC12V, 1.5A
Emission CE, FCC

Package Contents

  • One VoIP Gateway Router
  • One QIG / User's Manual CD-ROM
  • One RJ-45 Network Cable
  • One Power Adapter

Ordering Information

Model Description
UTG7104-22R 4-port VoIP SIP/H.323 Gateway VPN Router ( 2-FXS + 2-FXO )
UTG7104-SR 4-port VoIP SIP/H.323 Gateway VPN Router ( 4-FXS )
UTG7104-OR 4-port VoIP SIP/H.323 Gateway VPN Router ( 4-FXO )
UTG7104-PR 4-port VoIP SIP/H.323 Gateway VPN Router ( 4-FXS/PSTN )