MetroCONNECT WCM1820: Ethernet Converter to 16x bonded E1 / T1

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The WCM1820 Ethernet Converter is a low cost Carrier Ethernet Service delivery unit, offering end to end management using 802.3ah OAM, and customer site LAN extension from twisted pair 10/100/1000BaseT and 100Base/1000Base-X fibre over up to 16 Clear-Channel or Fractional E1 or T1 leased line services.

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Gigabit Ethernet Extension over up to 16x Fractional E1 or T1 services

WCM1820: the "plug and play" way to connect LANs together over up to E1 circuits
WCM1820: Managed Ethernet Extender to connect LANs together over up to 16 E1 or T1 circuits
  • Ethernet Converter of 10Mb/100Mb/Gigabit Ethernet up to 16x Clear Channel or Fractional E1 or T1 services
  • Use either for individual Point-to-Point links, offering seamless Ethernet bandwidth over up to 16 'bonded' WAN circuits between two locations, or as a small Central Site Aggregator, serving combinations of single and/or bonded E1 or T1 links to between one and four separate locations
  • Four RJ-45 plus single SFP flexible media port, offering local Switched Ethernet connections up to 1Gbps
  • Mini Jumbo Frame Support (up to 2048bytes)
  • Fully manageable via Serial Terminal (user-friendly context-sensitive menu system), Telnet/SSH, SNMP and Web Browser
  • TACACS+ for secure authentication
  • 802.3ah Carrier Ethernet OAM protocol support, for Connectivity Management
  • Integrated 'Bit Error Rate Testing' (BERT) for WAN link verification and troubleshooting
  • 802.1q VLAN support with prioritisation based on 802.1p and/or DSCP markers
  • Bandwidth control per Ethernet Port and Priority queue (also for Broadcast traffic), enabling differentiated traffic QoS
  • Flexible Ethernet encapsulation schemes, including support for GFP standard for inter-operability
  • Link Loss Forwarding
  • RSTP support
  • LED status indicators
  • Alarm Extension Relay
  • Robust metal casing, made in the UK to high quality standards
  • Integral auto-sensing power supply (100-250V AC or -48V DC versions)
  • 12V & 24V DC PSU variants also available on request
  • Easy to install & maintain
  • 1-port , 4-port , 8-port and 16-port
  • E1/T1 versions also available
  • BNC Version also available

WCM1820 delivering Ethernet Extension services from an MPLS core network

WCM1820 delivering Ethernet Extension services from an MPLS core network

This application shows an WCM1820 unit being used as the Ethernet converter device to deliver a Carrier Ethernet service from an MPLS core network. A wide choice of Ethernet connectivity is available for the user via the 10/100/1000baseT and SFP fibre ports. OAM support means that the WCM1820 can be remotely managed by the central network management system using standards based OAM packets. GFP is supported allowing single ended use with aggregation platforms in the core network.

WCM1820 units performing Ethernet Extension service demarcation and media conversion

WCM1820 units performing Ethernet Extension service demarcation and media conversion

This application shows how a pair of WCM1820 units can be used to offer Ethernet Extension service demarcation and Ethernet Extension functionality either over up to 16 Fractional E1/T1 circuits.

WCM1820 units performing aggregation of services on multiple sites

WCM1820 units performing aggregation of services on multiple sites

This application shows how VLANs can also be used to select which site to forward user data to, e.g. when using a WCM1820 unit supporting sixteen E1 ports at a central site supporting up to four sites with WCM1100, WCM1400 or WCM1800 units each supporting up to eight E1 ports.

The WCM1820 is a member of the MetroCONNECT family, offering Managed LAN extension over either Clear-Channel or Fractional E1 or T1 Wide Area Networks.The WCM1820 supports four locally switched RJ45 LAN interfaces, three of which are for 10/100Mbps connections and the fourth supporting 1Gbps.A further LAN interface is provided via an SFP port, offering the flexibility of a wide variety of fibre interface options. Over-sized Ethernet frames are supported.

Ethernet VLANs are supported, either by pass-through of existing Tags or by the Push and Pop of Tags on ingress and egress at Ethernet ports. Pre-embedded prioritisation schemes can be honoured, or alternatively prioritisation can be over-written under Management control. Bandwidth limitation per port and per prioritisation can be implemented, providing a mechanism for differentiated QoS for different services. Management is offered via each of SerialTerminal connection,Telnet, SNMP or Web Browser application. Management security is offered via SSH and TACACS+ authentication. Support is also offered for ‘Carrier Ethernet’ Link OAM Management (IEEE 802.3ah), enabling status information to be shared with connected equipment if required.

In line with all other members of the MetroCONNECT Ethernet Service Delivery family, the WCM1800 supports Metrodata’s ‘zero-touch’ installation process, eliminating the need for skilled resources for remote-site installations.

The WCM1820 supports integrated ‘Bit Error Rate Testing’ (BERT), an invaluable aid during both installation and subsequent troubleshooting. This facility enables integrity testing of the WAN link, prior to application traffic, eliminating doubt as to the location of connectivity problems.

Ethernet traffic is encapsulated by the WCM1820, for transmission over an E1 or T1 link, using a number of optional schema including support for the ITU-T G.8040 standard ‘Generic Framing Procedure’ (GFP). The product can be used for Point-to-Point links, using two WCM1820 products joined via multiply ‘bonded’ terrestrial or wireless (e.g. microwave) WAN services, to provide seamless Ethernet bandwidth of up to ~32Mbps between two locations. Alternatively, the product can be used in conjunction with other members of the MetroCONNECT product family, including the WCM1100,WCM1400,WCM1800 and MC12000 Ethernet Service Delivery Chassis.As a small ‘Central Site’ aggregator, the WCM1820 may serve combinations of single and/or bonded WAN links to between one and four separate locations.

The WCM1820 is available in a choice of 100-250 VAC or -48 VDC integrated power supplies.

The WCM1820 can easily be rack mounted.

The WCM1820 is part of a wide range of LAN extension products from Metrodata.

WAN Port Specs
Port 16-port Fractional E1/T1 conforming to G.703
Interface E1: RJ45 (120 ohm) T1: RJ45 (100 ohm)
Framing E1: G.704 (with or without CRC4) or unframed T1: ESF
Line Coding E1: HDB3 T1: B8ZS
Bit Rate E1: 2.048Mbps +/- 50 ppm
T1: 1.544Mbps +/- 50ppm

1000Base-X Fibre Interface
Port IEEE802.3z 1000BaseX SFP
Interface Dual LC connectors

SFP 1000Base SX
Wavelength 850nm multimode
TX Power -9.5 to -3dBm
Max Rx input power 0dBm
Rx sensitivity -17 to 0dBm
Optical loss budget 7.5dB (550m)

SFP 1000Base LX
Wavelength 1300nm singlemode
TX Power -9.5 to -3dBm
Max Rx input power -3dBm
Rx sensitivity -19 to -3dBm
Optical loss budget 9.5dB (10km)

Dual 10/100/1000BaseT Electrical Interface
Port 4x 10/100/1000BaseT with auto-negotiation and Jumbo frame support
Interface RJ45 (Auto Crossover MDI/MDIX)
Operating mode Auto Negotiate, 10M, 100M, 1000M, Full Duplex, Half Duplex
LEDs Link, Activity, Speed

Compliance & Approvals
Safety EN60950
IEC60825-1 Class 1 Laser Eye Safety
EMC EN55022, EN50082

Environment
Temperature 0 - 50 deg C
0 - 95% RH, non condensing
Storage Temp -40 to 100 deg C
Pressure 86 - 106 kPa

Power Supply Options
-48 VDC -36 to -72V DC, 125 - 65 mA
AC Mains 100 - 250V AC, 50 - 60Hz, 60 - 25mA
Power Consumption 6 watts approx when operating

Packaging
Type 1U 19 inch rack mount
Dimensions 435 x 213 x 43 mm (W x D x H)
Order Code
Product AC Mains: 100 - 250 VAC DC Power: -48 VDC
80-70-82542 80-71-82542

Product variants with 12V to 24V DC operation are also available on request.

If you require further information please contact our sales team with your requirements.

Commonly used SFP transceivers Order Code Description
1000baseT Gigabit Ethernet 80-31-001 Copper Interface
RJ45 connector
1Gbps Multimode 550m 850nm 80-31-011 Multimode interface
fibre optic loss budget 7.5dB
1Gbps Singlemode 10km 1300nm 80-31-031 Singlemode interface
fibre optic loss budget 9.5dB
1Gbps Singlemode 40km 1300nm 80-31-033 Singlemode interface
fibre optic loss budget 18dB
1Gbps Singlemode 80km 1550nm 80-31-042 Singlemode interface
fibre optic loss budget 20dB
100Mbps Multimode 2km 1300nm 80-30-021 Multimode interface
fibre optic loss budget 8.5dB
100Mbps Singlemode 10km 1300nm 80-30-031 Singlemode interface
fibre optic loss budget 13dB
100Mbps Singlemode 40km 1300nm 80-30-033 Singlemode interface
fibre optic loss budget 20dB
100Mbps Singlemode 80km 1550nm 80-30-042 Singlemode interface
fibre optic loss budget 29dB

Other SFPs are available on request including long haul, 1550nm, CWDM and bi-directional.

Whilst the MetroCONNECT product range uses industry standard user exchangeable SFPs, it is recommended that these are purchased from Metrodata to guarantee their specification and compatibility with each other.

If you require another SFP please contact our sales team with your requirements.

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Networking The World Since 1989