Product Line

∴	NS4012G_AC: 12 ports SHDSL DSLAM with AC Power supply
∴	NS4012G_DC: 12 ports SHDSL DSLAM with DC Power supply
∴	NS4024G_AC: 24 ports SHDSL DSLAM with AC Power supply
∴	NS4024G_DC: 24 ports SHDSL DSLAM with DC Power supply

Features of Tag-based VLAN

∴	Fully complying with IEEE 802.1P/Q
∴	Highly sophisticated features : Forward Scheduling, Diff-Serv(L3), Discarding(RED), TCP/UDP logical port
∴	Traffice control for QoS demand(VoIP and video conferencing)

Advanced Remote Management

∴	Remote installation, operation and management from a center location. 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 NS4024 by utilizing proprietary 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
∴ A single copper-pair connectivity with 2.3Mbps
  - NBG420 2-wire SHDSL Business Gateway
  - NM220G SHDSL Modem
∴ Two copper-pair connectivity with 4.6Mbps
  - NBG440 4-Wire SHDSL Business Gateway


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
100 ~ 240VAC, 50 ~ 60Hz

MECHANICAL
Size : 432mm(W) x 361mm(D) x 44mm(H)
Weight : 5.5Kg
Mount : 19" rack mount, 1U, or desktop

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

LINE INTERFACE
Uplink : Dual 10/100M Ethernet
            RJ-45 connector
SHDSL : 24-port SHDSL (Compliant to ITU G.991.2)
            RJ-21 connector (Telco 50 pin connector)
            2000Kbps-2320Kbps at 64Kbps step
            384Kbps-4608Kbps at 128Kbps step (4 wire mode)
            TC-PAM modulation

CONSOLE
RS-232C
DB-9 connector

DIAGNOSTICS LEDs
Power : On / Off
SHDSL
   SYNC : 24 ports
   ACT : Light flashing (Tx / Rx)
Ethernet
   Right Light on : 100M Ethernet
   Right Light off : 10M Ethernet
   Left Light on : Link on
   Left Light flashing : Tx / Rx

Ethernet
Support 802.3/3u/3x
Back pressure flow control for half duplex
Flow control for full duplex (802.3x)

Bridging
32K 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*

VLAN
Port-based VLAN
IEEE 802.1Q Tag-based VLAN
No. of IEEE 802.1Q tag-based VLAN : 255
GVRP suppor*

QoS
Traffic Classification based on :
 - Port based priority
 - VLAN priority field in VLAN tagged frame
 - DS/TOS field in IP packet
 - TCP/UDP logical ports
4 priority queues with delay bounded, strict priority and WFQ service
disciplines 2 dropping precedence with WRED mechanism

IP Multicast
Support IGMP snooping*

Management
Local console
SNMP v2
Web-based management
Telnet
Automatic CPE management
 - Remote Monitoring
 - Remote Configuration

MIB
RFC 1213 MIB II
RFC 1493 Bridge MIB
SHDSL line MIB

BACK PANNEL

ⓐ Telco 50 pin connector(female) ⓑ AC Power connector ⓒ Power Switch

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.