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Zyxel 24-Port DMT-based 4-band VDSL2 Line Card (VLC1224G)

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Zyxel 24-Port DMT-based 4-band VDSL2 Line Card

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The VLC1224G-41 is a 24-port VDSL line card for IES-5000 Series w/POTS splitter VSC1024-41 separated. VLC1224G-41 is a DMT-based 4-band VDSL2 line card. It can connect with suitable CPEs (P-870MH-C1).
  • MacMall Part #: 7398917 
  • Manufacturer Part #: VLC1224G 
  • UPC: 0734660064941 
  • Platform: Universal 

Unlike ATM traffics carried by the existing IES-5000/5005 line cards, VLC1224G-41 conveys Ethernet packets as its native traffic units. It is the first line card providing Ethernet First Mile (EFM) service in ZyXEL IP DSLAM series products. The transmission rate will be up to 65Mbps downstream and 35Mbps upstream while the distance to the customer is less than 1Kft without bundling and without splitter. The product is most suitable for triple-play services

Key features and benefits:

– Various Band Plans Supports Different Applications VLC1224G-41 transceiver supports G.993.2 8a, 8b, 8c, 8d, and 12a profiles

– Gbps duplex backplane to provide high bandwidth transmission VLC1224G-41 provides up to two Gigabit Ethernet ports to connect to the MAC1000G (one GE per slot in IES-5000 and 2 GE per slot in IES-5005). Since VDSL ports can only support 100Mbps in a very short distance, VLC1224G-41 can have almost non-blocking interconnection to the MSC-1000G in most of the environments and application scenarios

– Complete Ethernet VLAN and multicast functions VLC1224G-41 provides Ethernet VLAN feature for both security and performance purpose. VLAN is used to isolate traffic between different users/applications in order to provide better security/ performance. Performance can also be enhanced by limiting the broadcast traffic within a VLAN broadcast domain. The IGMP snooping function is also provided in VLC1224G-41. This prevents unnecessary forwarding of multicast traffic to all subscribers, thus optimizing bandwidth utilization for multicast applications such as broadcast video

– MVLAN feature consolidates the same video stream requested by different VLANs. The multicast VLAN feature checks all the VLANs to see if they request the same video stream. If they do, instead of requesting many video streams, it requests only one and then distributes to all the VLANs that request the video stream. Thus, the total number of the video streams can be reduced significantly.

– Rate Limiting Allows Service Differentiation. In order to fulfill the needs of different customers, service providers need a network infrastructure that combines guaranteed performance and flexibility in service provisioning. Rate limiting on the subscriber ports allows for service in increments of 64Kbps, allowing service providers to offer tiered service

– Multicast Bandwidth Control
A static bandwidth control mechanism is proposed. Each multicast channel is provisioned with a “bandwidth usage” information, the system will check if total bandwidth exceeds “bandwidth budget” during IGMP snooping to decide if joining a multicast group is permitted or not.

– Upstream Access Control Mechanism
VLC1224G-41 supports not only 802.1x port-based access control for subscriber authentication, but also define a limited number of MAC addresses that can access the network from a particular port. This feature denies access of unauthorized devices to communicate through the switch and highly enhances network security. Another access control feature is the capability to limit the number of users (MAC addresses) that can access the network simultaneously on a per-port basis, allowing the service provider to offer flexible billing plans. Besides that, VLC1224G-41 provides per-port packet classification rules based on the header information up to layer 4 and the corresponding action rules to manipulate incoming packets as needed

– DHCP snooping
VLC1224G-41 provides DHCP snooping mechanism to prevent users using static IP address. If a port is DHCP enabled then IP packets from the port can not pass through the line card if the IP address of the packets are not leant by DHCP snooping mechanism

– Transparent LAN Service
VLC1224G-41 provides IEEE 802.1ad VLAN stacking function. If the function is enabled, it can add providers s-tag for incoming c-tag frames without checking c-tag value or add s-tag to incoming untagged frames. ‘s-tag will be removed while frames are toward subscribers. Moreover, different ports can apply the same s-tag value. With the mechanism, operators can easily identify traffics from different users/applications and route the traffics to associated ISPs

Product Specifications:

• Compliant with ITU-T G.993.2, G.994.1
• DMT mode 4-band modulation with profiles 8a, 8b, 8c, 8d, 12a, supported
• TX rate (DS): 160kbps ~ 64Mbps
• TX rate (US): 160 Kbps ~ 36Mbps
• All front access
• Hot-swappable
• 2 Gigabit to backplane
• Separated POTS splitter (VSC1024-41)
• 2 Gigabit to backplane
• Separated POTS splitter (VSC1024-41)
• Support Status, Alarm, Power LED

VDSL Layer
• Tone Spacing.: support 4.3125KHz +/- 50ppm for 8a, 8b, 8c, 8d, 12a
• Spectrum :support 2 upstream bands and 2 downstream bands up to 12MHz.
• support bandplan 998 and the associated PSD limitation(annex B of G.993.2)
• Support bandplan 997 and the associated PSD limitation; Support US0 band up to 276Khz
• Support Data Packet Transport with EFM (64/65)encapsulation
• Transmit PSD notches at RFI bands (Ingress & Egress)
• Customize PSD
• Max transmit power : up to 20.5dBm
• Support 802.3x Flow Control Mechanism
• Support Bit Loading Information Retrieval
• INP based interleaver and RS Code
• Trellis Code
• Single Latency in PTM mode
• PMS-TC supports FEC function, interleaving and can be configured by EMS
• VDSL OAM : support IBC, EOC and VDSL VOC
• Support UPBO(chap. 7.2 of ITU-T G.993.2)
• Support Re-sync. and RFI Config.
• Forwarding Frame : IEEE 802.3/IEEE 802.1Q/Ethernet II/PPPoE

Traffic Mgmt :
• 4 queues wih queue scheduling of SPQ and WRR
• Priority queuing based on physical port, VLAN ID, VLAN priority, MAC address source/destination, IP address source/destination and ToS & DSCP value as well as UDP/TCP source/destination port number.
• Rate limiting support with 32 kbps stepping

Security/Filtering :
• Port isolation
• Upstream ACL mechanism :up to L4 packet classification based on IP source/destination address, protocol ID, UDP/TCP source/destination port number and action definition, including
- ARP broadcast filtering
- DHCP broadcast filtering
- NetBios filtering
- IGMP filtering, etc.

• L2 filtering based on Ethertype, source/destination MAC address, VLAN ID and VLAN priority including
- PPPoE filtering
- NetBios filtering
• Anti MAC/IP address spoofing (DHCP snooping)
• Limitation of number of MAC address per VDSL port
• IEEE 802.1x with radius client support

Switching :
• 4096 VLAN tagging
• 4K MAC address per card
• Support static MAC address
• 16 transsparent VLAN per port
• IEEE 802.1d
• DHCP relay option 82
• Maximum Frame size :1600 bytes

Multicast :
• IGMP v1 & v 2 snooping
• Multicast VLAN
• Support 256 IGMP groups
• 24 members/multicast group
• Static multicast forwarding
• IGMP group count limiting/DSL port
• IGMP filtering profile
• Support fast leave
• Multicast Bandwidth Control

Network Mgmt :
• RS-232 port for local debug
• Web-based management
• SNMP v1, v2c and v3 support
• Remote debug through MSC Telnet
• Security on access right control (multi-level login) through MSC
• Status display and event report

• RFC1493 Bridge MIB
• RFC1643 Ethernet MIB
• RFC2674 Q MIB
• VDSL Line MIB (RFC3728)
• RFC1757 RMON MIB, group 1,2,3,9
• ZyXEL proprietary MIB
- MIB for VDSL uplink/downlink SNR
- MIB for VDSL interface Tx/Rx power

Power Consumption :
• -36VDC(+/-5%) ~ -72VDC(+/-5%)
• Alarm input : -36VDC(+/-5%) and -72VDC(+/-5%)
• Less than 90 Watts (under full load condition)

Certification :
• ETSI300-019
• K.20
• Safety
EN60950-1, EN41003-1,ETSI300-386
CSA60950-1, UL60950-1, IEC60950-1
FCC Part 15 Class A
EN55022 Class A
EN55024 Class A
ETSI 300 386

Technical Specs

Manufacturer Information
Parts Warranty 2 years
Labor Warranty 2 years
Warranty Details Limited warranty.
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Zyxel 24-Port DMT-based 4-band VDSL2 Line Card (VLC1224G)

The VLC1224G-41 is a 24-port VDSL line card for IES-5000 Series w/POTS splitter VSC1024-41 separated. VLC1224G-41 is a DMT-based 4-band VDSL2 line card. It can connect with suitable CPEs (P-870MH-C1).

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