24-Port VDSL2 IP DSLAM + 2-Port Gigabit TP/SFP Combo

Perfectly Designed for FTTx Last Mile Applications
PLANET VDL-2420M is a telecom-level, high-performance VDSL2 IP DSLAM (Digital Subscriber Line Access Multiplexer) with 24 VDSL2 ports, 2 Gigabit TP/SFP combo interfaces and robust Layer 2+ switching features. The VDL-2420M is fully compliant with the ITU-T G.993.2 standard and supports VDSL2 30a profiles to offer a maximum download or upload line rate of up to 100/100Mbps on the existing twisted-pair lines. The VDL-2420M helps service providers to easily provide high bandwidth demanded by triple play services such as IPTV, HDTV, Video Phone and Internet Gaming over the same copper line and they can be uplinked to the core/metro Ethernet network through the two Gigabit fiber-optic interfaces. It is an ideal CO solution for FTTx Last Mile applications of broadband access by ISPs, telecoms and campuses.

Comprehensive and Advanced VDSL2 Configuration
For the bandwidth and distance of broadband access, the VDL-2420M VDSL2 IP DSLAM supports multiple selective VDSL2 profiles (8a, 8b, 8c, 8d, 12a, 12b, 17a and 30a). To help provide the ISPs with internet access service in different physical line installation environments, the VDL-2420M supports configurable DPBO (Downstream Power Back-Off) and UPBO (Upstream Power Back-Off) to adjust the downstream and upstream transmit power levels for service providers to reduce the interference by nearby wires. Furthermore, it can be configured on a per link basis for transmission mode, rate limitation and SNR (signal-to-noise) margin. These advanced VDSL2 functionalities help service providers to adjust the line performance to ensure the VDSL2 service cannot be impacted by other xDSL services in the same binder group and build a stable and reliable IP DSLAM solution.

Delivering Highly-demanding Connectivity for ISPs/Triple Play Devices
As the demand for home broadband connections increases, the VDSL2 technology is the next media to support the integration of home services and provides a significant transmission speed faster than that of the current cable modem and ADSL technology. The VDL-2420M applies the EoVDSL (Ethernet over VDSL) to providing up to 100Mbps download capability and makes the following multi-media services more efficient on the local network:
　■ IPTV/HDTV
　■ VoD (Video on Demand)
　■ Voice over IP
　■ Video Conferencing/Video Phone
　■ On-line Gaming
　■ Internet Radio/On-line Music
　■ Long-distance Education

The VDL-2420M offers an excellent bandwidth to meet the requirements of the triple play devices for home entertainment and communications.

QoS Features Provided to Ensure Best Performance
The VDSL2 DSLAM contains robust QoS features such as port-based, 802.1p priority and IP ToS/DSCP to ensure the best performance of its VoIP and video stream transmission, thus empowering the enterprises to take full advantage of the limited network resources.

Selectable VDSL2 Data Rate for Service Differentiation
Through the management interface, the administrator can control the data transmission speed of each VDSL2 interface. Telecoms and ISPs can immediately and remotely upgrade/downgrade bandwidth service upon different demands.

Efficient Management
To further expand the current network, PLANET VDL-2420M provides console and Telnet command line interfaces, and advanced Web and SNMP management interfaces. With its built-in Web-based management interface, the VDSL2 DSLAM offers an easy-to-use, platform-independent management and configuration facility. The VDSL2 DSLAM supports standard Simple Network Management Protocol (SNMP) and can be monitored via any standard-based management software. For text-based management, the VDSL2 DSLAM can also be accessed via Telnet and the console port. The features above provide an efficient way to manage the devices from the internet environment with no need to add an extra secure system either by means of hardware or software.

Robust Layer 2 Features
For efficient management, via Web interface, the VDL-2420M can be programmed for basic switch management functions, such as port speed configuration, port link aggregation, IEEE 802.1Q VLAN and Q-in-Q VLAN, port mirroring, Rapid Spanning Tree, and ACL security. Additionally, the firmware includes advanced features such as IGMP snooping, QoS (Quality of Service), broadcast storm and bandwidth control to enhance bandwidth utilization.

Advanced Security
The VDSL2 DSLAM offers comprehensive Layer 2, Layer 3 and Layer 4 Access Control List (ACL) to filter out unwanted traffic. Its protection mechanisms comprise RADIUS and port-based 802.1X user and device authentication. Moreover, the VDSL2 IP DSLAM provides MAC filter, static MAC, IP/MAC binding and Port Security for enforcing security policies to the edge. The administrators can now construct highly-secure corporate networks with considerably less time and effort than before.