8-Port VDSL2 + 2G TP/SFP Managed Switch VC-820M




  1. High Performance VDSL2 Data Rate over Existing Phone Lines
  2. Delivering Highly-demanding Connectivity for ISPs/Triple Play Devices
  3. QoS Features to Ensure Best Performance
  4. Selectable VDSL2 Data Rate for Service Differentiation
  5. Efficient Management
  6. Robust Layer 2 Features
  7. Advanced Security




8-Port VDSL2 + 2G TP/SFP Managed Switch VC-820M

Hardware Specifications
Hardware Version 2.0
VDSL Interface 8 VDSL2 RJ11 interfaces
8 POTS RJ11 interfaces
Copper Ports 2 10/100/1000BASE-T RJ45 auto-MDI/MDI-X ports
SFP/mini-GBIC Slots 2 1000BASE-X SFP interfaces, shared with Port-9 and Port-10
Console 1 RS232-to-RJ45 serial port (115200, 8, N, 1)
Transient Voltage Suppressor IEC 61000-4-2 (ESD): ±15kV (air), ±8kV (contact)
IEC 61000-4-4 (EFT): 40A (5/50ns)
IEC 61000-4-5 (Lightning): 24A (8/20μs)
Switch Architecture Store-and-Forward
Switch Fabric 5.6Gbps/non-blocking
Switch Throughput 4.16Mpps @64 bytes
Address Table 8K entries
Shared Data Buffer 256K bytes
Maximum Frame Size 9K bytes
Flow Control Back pressure for half-duplex
IEEE 802.3x pause frame for full-duplex
Reset Button < 5 sec: System reboot
> 10 sec: Factory default
Dimensions (W x D x H) 404 x 174 x 44.5 mm, 1U height
Weight 2.4 kg
Power Requirements 100~240V AC, 50-60 Hz
Power Consumption/ Dissipation 36 watts (max.)/112.8 BTU/hr
VDSL2 Standard Complies with ITU-T G.993.1 and G.993.2.
Supports provisioning the VDSL optional band (25K to 138K Hz) usage
Band Plan Selectable band plan for each VDSL line on a per port basis
Band Plan A:
– Profile 998, Annex A of G.993.1; optimized for symmetric services
Band Plan B:
– Profile 997, Annex B of G.993.1; optimized for asymmetric services
Profile Selectable spectrum profile of 8a/b/c/d, 12a/b, 17a, and 30a for frequency bands (Annex A, B and C) defined in G.993.2
Encoding VDSL-DMT
VDSL2 Features Selectable rate limit control
Selectable target SNR (Signal to Noise Ratio) mode
POTS voices passthrough
Layer 2 Function
Management Interface Console, Telnet, Web browser, SSL, SNMP v1, v2c, v3
Gigabit Port Configuration Port disable/enable
10/100/1000Mbps full and half duplex mode selection
Flow control disable/enable
Gigabit Port Status Display each port’s speed duplex mode, link status and flow control status
Auto-negotiation status, trunk status
Port Mirroring TX/RX/both
1 to 1 monitor
Bandwidth Control Ingress/Egress rate limit control
Gigabit Port:
• Allow to configure per 128Kbps
VDSL2 Port:
• Allow to configure per 5Mbps
VLAN IEEE 802.1Q tag-based VLAN, up to 256 VLANs groups, out of 4094 VLAN IDs
Port-based VLAN
GVRP, up to 128 dynamic VLAN groups
Q-in-Q tunneling
Private VLAN Edge (PVE/Protected port) with two protected port groups
Link Aggregation Static port trunk
IEEE 802.3ad LACP (Link Aggregation Control Protocol)
Supports 13 groups with 8 ports per trunk
QoS 4 priority queue
Traffic classification based on
– Port priority
– 802.1p priority
– DSCP/TOS field in IP Packet
VoIP QoS by application protocol no.
IGMP Snooping IGMP (v1, v2) Snooping, up to 256 multicast groups
Access Control List IP-based Layer 3/Layer 4 ACL
Up to 220 ACL rule entries
Security Port Security (Disable per port of MAC address learning)
Static MAC, MAC filter, IP/MAC binding
RFC 2863 Interface MIB
RFC 2665 EtherLike MIB
RFC 1493 Bridge MIB
RFC 2819 RMON MIB (Group 1, 2, 3,9)
Standards Conformance
Regulatory Compliance FCC Part 15 Class B, CE, VCCI
Standards Compliance IEEE 802.3: 10BASE-T
IEEE 802.3u: 100BASE-TX
IEEE 802.3z: 1000BASE- SX/LX
IEEE 802.3ab: 1000BASE-T
IEEE 802.3x: Flow control and back pressure
IEEE 802.3ad: Port trunk with LACP
IEEE 802.1D: Spanning Tree Protocol
IEEE 802.1w: Rapid Spanning Tree Protocol
IEEE 802.1p: Class of Service
IEEE 802.1Q: VLAN Tagging
IEEE 802.1x: Port Authentication Network Control
G.993.1 (VDSL)
G.993.2 VDSL2
RFC 768: UDP
RFC 791: IP
RFC 2068: HTTP
RFC 1112: IGMP v1
RFC 2236: IGMP v2
Cables • VDSL2: twisted-pair telephone wires (AWG24 or better) up to 1km
• 10/100BASE-TX: 2-pair UTP Cat.5, up to 100m (328ft)
• 1000BASE-T: 4-pair UTP Cat.5E, up to 100m
• 1000BASE-SX: 50/125µm and 62.5/125µm fiber-optic cable, up to 550m
• 1000BASE-LX: 9/125µm fiber optic cable, up to 10km 50/125µm and
62.5/125µm fiber-optic cable, up to 550m
Operating Temperature: -10 ~ 50 degrees C
Relative Humidity: 10~ 90% (non-condensing)
Storage Temperature: -20 ~ 70 degrees C
Relative Humidity: 10~ 90% (non-condensing)

メーカーサイト VC-820M