VCL Products > STM/SDH Multiplexer > STM-1 Add-Drop Multiplexer
Interface card options
- 8 x E1 interface card (120 Ohms [RJ-45] and 75 Ohms [BNC])
- 4x100BaseT Ethernet interface card (1 VCG, 4 Ports 1 Channel) and
- 4x100BaseT Ethernet interface card (4 VCG, 4 Ports 4 Channels) options.
STM-1 (Optical / Electrical) Add-Drop Multiplexer
(with upto 16 E1 & 4 Ethernet) SDH Equipment
STM-1 (Optical / Electrical), E1 and Ethernet Multi-Service SDH Transmission Unit is a modular platform unit with two 155.52Mbps optical / electrical interfaces, which may be used in a point-to-point, chain or ring application to provide an ultra-compact, cost effective and flexible multi-service platform. Interface card options include the 8xE1 interface card (120 Ohms [RJ-45] and 75 Ohms [BNC]), 4x100BaseT Ethernet interface card (4 VCG, 4 Ports 4 Channels) and Gigabit Ethernet interface card options. The user removable / replaceable STM-1 Optical / Electrical interface option makes it easy to meet various and changing user requirements. Valiant's STM-1, E1 and Ethernet over SDH Transmission Equipment provides full capability to cross-connect at VC-12 level between all tributaries.
Features
- 1U height, 19-Inch standard rack-mountable chassis
- 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)
- 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
- 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)
- Ethernet bandwidth can be adjusted by the user between 2MBps ~126 Mbps (VC-12 mapping)
- Supports MAC Address list filtration, learning and updating function
- Easy to operate
Ethernet Standards Conformity
- 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
- Large buffer size upto 410,000 bytes
- Maximum Frame length (MTU size):1552 bytes with Gigabit Ethernet Card
- Maximum Frame length (MTU size): 2036 bytes with 4 port 4 channel (4 VCG) Ethernet Card Electrical Gigabit compliant with 802.3ab
- Optical Gigabit compliant with 802.3z
- Auto MID/MID-X for Ethernet Interfaces
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
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
- 4 x 10/100BaseT Ethernet (electric) interface
- 1x GigE (Gigabit) Ethernet interface Options
- Optical GigE (Gigabit) Ethernet interface,
- Electrical 1000BaseT (Gigabit) Ethernet Interface
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
- NMS (Network Management System) for monitoring multiple units from a single / central location
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
- Ethernet Card Status Indicator
- General Alarm Indicator for Ethernet Card (including Link-down of Ethernet Port)
- Auto Laser Shutdown (ALS) Indicator
- Ethernet Link Indicator
- Ethernet Speed Indicator
- E1 Card Status Indicator
- Dry contact via 9-pin, D-type male connector
- Buzzer Alarm
- SNMP Diagnostic and Monitoring
Performance Analysis
- Power Indicator
- All Received Packets
- All Transmitted Packets
- Received Dropped Packets
Network Topology and Interfaces
| Network topology | Point to point network, Ring and Chain STM-1 SDH single optical or double |
| Service interfaces | STM-1 SDH single optical or double optical ports (1+1 protection) supported
|
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 |
STM-1 Optical Interface
| Data Rate | 155.52 Mbps |
| Standard | ITU-T G.957 compliant |
| Bit rate | 155.520Mbps |
| Coding | NRZ |
| Connector | LC |
| Light source | Class 1 Laser |
| Wave length | 850nm/1310nm/1550nm (optional) - 1310nm Std. |
| 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 Monitoring and Performance Analysis
| 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) |
E1 Port (TU 12) Performance Analysis
- Error Bits (EB)
- Error Seconds (ES)
- Several Error Seconds (SES)
- Unavailable seconds (UAS)
- Remote Error Indication (REI)
- Code Violation (CV)
Clock Synchronization Options
- 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) - Factory Configurable
- 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.
GigE - Ethernet Interface Specification
| Number of Interfaces | 2 Electrical (Comply with IEEE 802.3ab) 1 Optical - Optional (Comply with IEEE 802.3z) |
| Interface Types | 10/100/1000BaseT or 1000Base-FX (LC) |
| MDI/MDI-X Support | Yes (Electrical port) |
| VCAT Compliance | ITU-T G.707 |
| LCAS Compliance | ITU-T G.7042 |
| GFP-F | ITU-T G.7041 |
| Frame Size | 1552 bytes |
| Transmission Bit Rate | 10/100/1000 Mbps |
| Connectors | RJ-45 Electrical / LC - Optical |
| 802.1Q MAC packet transparent transmission supported Ethernet data rate can be adjusted from 2M to 126M | |
E1 Interface Specification - 120 Ohms
| Number of E1s (Max) per system | 16 E1 Interfaces |
| Number of E1s per E1 service card | 8 E1 per card |
| E1 Interface option | 8 E1 / 16 E1 (Optional) |
| Line Rate per E1 | (2.048 Mbps ± 50 bps) |
| Line Code | ass |
| Framing Structure | As per ITU (CCITT) G.704 |
| Framing Options | Un-Framed/PCM 30/PCM 31 |
| Electrical | As per ITU-T G.703 |
| Jitter | As per ITU-T G.823 |
| Impedance | 120 Ohms balanced |
| Nominal Pulse Width | 244ns |
| Pulse Shape | As per ITU-T G.703 |
| Connector | RJ-45 (F) |
E1 Interface Specification - 75 Ohms
| Number of E1s (Max) per system | 16 E1 Interfaces |
| Number of E1s per E1 service card | 8 E1 per card |
| E1 Interface option | 8 E1 / 16 E1 (Optional) |
| Line Rate per E1 | (2.048 Mbps ± 50 bps) |
| Line Code | HDB3 |
| Framing Structure | As per ITU (CCITT) G.704 |
| Framing Options | Un-Framed/PCM 30/PCM 31 |
| Electrical | As per ITU-T G.703 |
| Jitter | As per ITU-T G.823 |
| Impedance | 75 Ohms unbalanced |
| Nominal Pulse Width | 244ns |
| Pulse Shape | As per ITU-T G.703 |
| Connector | BNC |
Application # 1: Point to Point Network Application Diagram
Application # 2: Chain Network Application Diagram
Application # 3: Ring Network Application Diagram
