The NBG400 Series Business Gateways are perfect for mission-critical applications such as Metropolitan, Local Exchange Area and Campus networking for multimedia services and network gateway access.

The NBG400 Series provide robust IP routing, concurrent bridging functions based on international ITU-T/ETSI G.SHDSL transmission (G.991.2) standards and has a built-in 4-port Ethernet switch..

Interoperating with NexComm's Ethernet-based SHDSL Mini-DSLAM NS4024G, the NBG400 Series provide a cost-effective alternative of Ethernet networking of Point to Multi-Point application for SMBs that have multiple buildings in a Town or Campus-like environment. By leveraging Tag-based VLAN an STP capabilities of the NBG400 Series, the network ensures a highly secure and reliable environment. By utilising the Ethernet-based QoS capabilities the network can take advantage of voice and video applications. This application requires no new infrastructure, and results in a low-cost, plug-and-play solution with low management overhead.

Features of Tag-based VLAN
- Fully complying with IEEE 802.1P/Q
- Supporting 16 concurrent VLANs & 4 Levels of QoS
- Traffic control for QoS demand for advanced services such as Voice   over IP (VoIP)  and video conferencing
- Suitable for Metro Ethernet Service provisioning

Product Line
  NBG420 2-Wire SHDSL Business Gateway
  - SHDSL speeds to 2.3Mbps
  - Broadband single copper pair connectivity with TC-PAM full-duplex high speed
    symmetric data rates and distances exceeding 7.2 kilometers
 NBG440 4-wire SHDSL Business Gateway
  - Inverse Multiplexing(iMUX) 2 copper pair connectivity:
  - Boosting up SHDSL speeds to 4.6 Mbps
  - 2-pair SHDSL line protection

Extra Performance Benefits
   Ethernet-based architecture: Providing 10% greater throughput without paying cell  tax(ATM Cell Overhead)
   Maximizing full bandwidth wire-speed performance

NAT, DHCP, STP, Security
   Powerful routing and concurrent bridging functing with IP filtering make shared
   Internet connectivity simple and secure
   Works as both bridge and router

Advanced Remote Management
    Remote installation, operation and management
    Once NBG400 Series are configured to NS4024G, NBG400 Series can be managed
    and monitored for operation and traffic status remotely
    Capability to download and restore the latest configuration of NBG400 Series from
    NS4024G by utilizing proprietry protocol without the need of IP
    Plug-and-play with auto configuration, No truck-roll required

IP Multicast

• Real-time multimedia application such as video conferencing, corporate communication, distance learning, and distribution of software, stock quotes and news.
   
• IGMP Snooping
  

Interoperable Nexpeed DSLAM Series

NS4024G : 24-port SHDSL Mini-DSLAM
NS3048 : 48-port SHDSL DSLAM
NR104G : 4-port SHDSL iMUX Router / Concentrator

DATA RATE
NBG420 : 200Kbps to 2.3Mbps at 64Kbps step
NBG440 : 384Kbps to 4.6Kbps at 128Kbps step
              Two-Pair SHDSL Line Protection & Load balancing

LINE INTERFACE
SHDSL : One pair SHDSL (RJ-45 Jack) for NBG420GH
            Two-pair SHDSL (RJ-45 Jack) for NBG440GH
LAN(Ethernet) : 10/100 Base-T with RJ45, MDI/MDI-X 4 Ports
                      Full support of maximum wire-speed performance

BRIDGING
1K MAC addresses
MAC address filtering
MAC address limiting
Flooding control
Spanning Tree Protocol (802. 1d)
Rapid Spanning Tree Protocol (802.1w)*
Per VLAN Spanning Tree (PVST) support
IP Multicast (IGMP snooping)*

ROUTING
Numbered/Unnumbered WAN interface
Dynamic & Static IP, RIP1 & RIP2
Proxy ARP, NAT, DHCP Server/Relay
PAP, CHAP for Security

VLAN
Port-based VLAN
IEEE 802.1Q Tag-based VLAN
No. of IEEE 802.1Q tag-based VLAN : 16
GVRP support*

QoS
Traffic Classification Based on :
- Port-based priority
- VLAN priority field in VLAN tagged frame
- DS/TOS field in IP packet
2 strict priority queues
Traffic control for each queue 

MANAGEMENT
Local consol with DB-9 port
SNMP v1, Telnet
Web-based management
Automatic CPE management
- Remote Monitoring & Configuration

Diagnostic LED
Power : On/Off
4W On (4 wire mode only for NBG440)
LAN Activity, Link (1~4), WAN Sync1, Sync2, ACT

POWER REQUIREMENT
External power supply module
- Input : AC 85 to 264V, 45 to 65Hz
- Output : DC +5V, 2A

MECHANICAL
Size : 238mm(W) x 182mm(D) x 47mm(H)
Weight : 511g
Mount : Stackable desktop

ENVIRONMENT
Operating Temp. 0°C to 50°C
Storage Temp. -20°C to 70°C
Humidity 5%~95%, non-condensing

BACK PANEL

A -To Power : DC connector
B - Power Switch
C - To LAN : 4 Ports RJ-45 Jack
D - To Control Terminal (Console) : DB-9 port
E - To Line : RJ-45 Jack

All future options are marked with '*'. Please contact NexComm's sales division or authorized dealer in your location for futher details.

Interoperability
NEXPEED NBG 400 Series is interoperable with major IP based DSLAM vendors. Please contact your authorized resellers for the latest interoperability information.

Warranty
NexComm Systems, Inc. warrants NEXSPEED product family to be free from defects in workmanship and materials, under normal use and service, for a period of one year from the date of purchase for NexComm Systems Inc. or its Authorized Resellers.

NEXPEED is registered trademark of NexComm Systems Inc.
All other trademarks are property of their respective owners.
Specifications are subject to change without prior notice.

Quality Management
NexComm Systems, Inc has been certified ISO9001 from European Quality Assurance Ltd. authorized agent of International Standard Organization(ISO)9001 Quality Management Standard.