Implementing international standard-based ITU-T/ETSI G.SHDSL transmission (G.991.2) with robust IP routing, concurrent bridging functions and built-in 4-port Ethernet switch, NBG400 Series Business Gateways are perfect for mission-critical applications such as campus networking, multimedia services and network gateway access.


Interoperating with NexComm's Ethernet-based SHDSL Mini-DSLAM NS4024G, the NBG400 Series provide a cost-effective altemative of Ethernet networking of Point to Multi-Point application for SMBs that have multiple buildings in a campus-like environment. By leveraging Tag-based VLAN an STP capabilities of the NBG400 Series, the campus ensures a highly secure and reliable network. By utilizing the Ethernet-based QoS capabilities the campus 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
Features

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
* Work as both bridge and router

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

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


Specification

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

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


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


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



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


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


Click to view product data sheet (PDF 86KB)