Orion’s VCL-Ethernet-over-SDH provides a simple, cost effective and compact solution to convert 10/100BaseT data interface on the user side and transport Ethernet traffic over a STM-1 SDH link and reconstruct the data back to ethernet frame format, at remote end. The converter is an effective method for converting and transporting 10/100BaseT ethernet data over an STM-1 (SDH) link.

• Compact 1U height, 19-Inch standard chassis ideal for rack mounting
• Service interfaces
  • 2 x STM-1 optical interfaces, SFP optical module (LC connector)
  • 2 x STM-1 electrical interfaces, SFP electrical module (Mini BNC connector) (optional)
• 4 x 10/100BaseT Ethernet (electric) interface
• 1 x GigE (GigaBit) Ethernet (optical) interface (optional)
• Management and Maintenance Interfaces
  • TCP/IP Management Interface for Telnet and SNMP
  • RS232 Serial Management Interface
  • SNMP based NMS inbuilt with Windows XP / Windows Vista compatible Graphical User Interface (GUI)
  • SNMP V2 Management and Monitoring
  • Engineering Order Wire (EOW) Interface (RJ-11)
• Timing mode
• Synchronization with STM-1 line timing
• External timing source option - 120 Ohms 2MBps (External Bits Clock)
• External timing source - 120 Ohms 2MHz (External TTL Clock)
• Internal Clock - ITU-T G.813 internal oscillator
• The timing source can be auto-switched according to default or operator programmed settings
• Ethernet Standards Conformity:
• Generic Framing Procedure GFP-F compliant with ITU-T G.7041
• VCAT compliant with ITU-T G.707 and LCAS compliant with ITU-T G.7042
• Ethernet flow control on WAN Port and LAN Port
• Maximum Frame Size : 1536 bytes
• Auto MDI/MDI-X for Ethernet Interfaces
• Supports 1+1 Line Protection and Automatic Protection Switching (APS) with less than 50ms recovery
• Supports Remote Power Down Detection (RPD) and Auto Laser Shutdown (ALS)
• Supports STM-1 loop-back for troubleshooting
• Supports management based on CLI commands via RS232 interface and TELNET
• Redundant power supply (-48V DC) option available
• Power consumption less than 20W
• Providing standard STM-1 Electrical interface compliant to G.664 standard
• 4 x Ethernet Ports - - electrical
• Supports 802.1Q based VLAN tagging
• Supports Port based VLAN tagging
• Dual or single fiber transmission supported
• 1310nm wavelength and 1550nm wavelength supported
• Ethernet mapping adopts GFP/VC-12 virtual concatenated technology; according with MSTP criterion
• Provides Ethernet over SDH mapping through standard GFP and VC-12 virtual concatenation (VCAT)
• EoS bandwidth can be adjusted between 2M~100M by set the number of VC-12s (1~48) through management software
• Supports MAC Address list filtration, learning and updating function
• Easy to operate.

Application Diagram

STM-1 Optical Interface

Data Rate	155.52 Mbps
Standard	ITU-T G.967 compliant
Bit rate	155.520Mbps
Coding	NRZ
Connector	LC
Light source	Class 1 Laser
Wave length	1310nm or 1550nm (optional)
Transmit power	S 1.1, L 1.1, L 1.2 (- 11 dBm to - 2.5 dBm - as may be ordered)
Receive sensitivity	S 1.1, L 1.1, L 1.2(- 28 dBm to - 34 dBm - as may be ordered)
Automatic 1+1 Line Protection	Less than 50 ms switching / recovery
Automatic Laser Shut Down Option	User selectable options

STM-1 Electrical Interface

Data Rate	155.52 Mbps
Standard	ITU-T G.703 Compliant
Line Code	CMI
Physical Connector	Mini BNC
Automatic 1+1 line protection	Less than 50 ms switching / recovery

Ethernet Interface Specification: 10/100BaseT (Electrical)

Interface Types	10/100BaseT
VCAT Compliance	ITU-T G.707
LCAS Compliance	ITU-T G.7042
GFP-F	ITU-T G.7041
Frame Size	1536 bytes
Transmission Bit Rate	10/100BaseT
Connectors	RJ-45 (10/100 BaseT Electrical)

Engineering Order Wire (EOW)

Engineering Order Wire (EOW)

RJ-11 connector

NMS

• Windows XP / Windows Vista compatible
• SNMP V2 based NMS