VCL-STM

Features and Highlights

• 1U height, 19-Inch standard rack-mountable chassis
• Service interfaces
• 2 x STM-1 optical interfaces, MSA compliant SFP (pluggable) optical module (LC connector) based design, which supports onsite optical port replacement
• 2 x STM-1 electrical interfaces, SFP electrical module (Mini BNC connector) Optional
• Maximum 16 E1 interfaces compliant with ITU-T G.703 (8 E1 interfaces per card)
• 120 Ohms E1 and 75 Ohms E1 interfaces options available.
• Provides complete diagnostics facilities to the user for monitoring optical ports and provide reading of optical transmit power, optical receive power, laser temperature, bias current in voltage alarms etc.
• Performance Monitoring and Alarms - Error counts for B1, B2, B3
• Performance Analysis - Error Seconds (ES), Several Error Seconds (SES), Unavailable seconds (UAS), Higher Order Virtual Container - Remote Error Indication (HOVC-REI), Higher Order Virtual Container - Pointer Justification Event (HOVC-PJE)
• Management and Maintenance interfaces
• 10/100BaseT Ethernet management interface
• RS232 serial management interface
• Remote (Telnet) management interface
• Windows XP based Graphical User Interface (GUI)
• Windows 7 based Graphical User Interface (GUI)
• SNMP V2 Monitoring
• Engineering Order Wire (EOW) interface (RJ-11)
• NMS (Network Management System) for monitoring multiple units from a single / central location
• Timing mode
• Synchronization with STM-1 line timing
• Synchronization with timing from any of the E1 interfaces (1-16 E1 tributary interfaces)
• External timing source option - 120 Ohms 2MBps (External Bits Clock)
• External timing source - 120 Ohms 2MHz (External TTL Clock) - Factory Configurable
• Internal Clock - ITU-T G.813 internal oscillator (Stratum 3)
• The timing source can be auto-switched according to default or operator programmed settings
• Supports 1+1 Line Protection and Automatic Protection Switching (APS) with less than 50ms recovery
• Supports point-to-point, ring and chain topology (4 VCG card only)
• Local management and network-based management via a unified platform
• Supports Remote Power Down Detection and Auto Laser Shutdown
• Supports STM-1 and E1 loop-back for troubleshooting
• 850nm multi-Mode, 1310nm Single Mode and 1550nm Single Mode optical interface options offered
• Easy to operate
• Redundant power supply card options AC+DC, DC+DC and AC+AC
• 110V AC - 240V AC (50/60 Hz) power options available
• -48V DC power option available
• Power consumption less than 20W.

Alarm and Indicator Monitoring

• Power Indicator
• Current Status (integrity and activity) Indicator
• Urgent Alarm Indicator
• Minor Alarm Indicator
• Optical Signal Loss Alarm Indicator
• Remote Device Power-down Indicator
• Auto Laser Shutdown (ALS) Indicator
• Engineering Order-Wire (EOW) Indicator
• Dry contact via 9-pin, D-type male connector
• Buzzer Alarm
• SNMP Diagnostic and Monitoring