STM-1, 63E1, Optical, Electrical, Add-Drop SDH Multiplexer

VCL Products > STM SDH Multiplexer > 63 E1 Add-Drop SDH Multiplexer

STM-1, 63 E1 (Optical / Electrical)
Add-Drop SDH Multiplexer

Valiant’s STM-1 63 E1 (Optical / Electrical) Add-Drop SDH Multiplexer 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 service platform. 63xE1 interfaces (120 Ohms [RJ-45] and 75 Ohms [BNC]) options along with Engineering Order Wire is available. The user removable / replaceable STM-1 Optical / Electrical interface option makes it easy to meet various and changing user requirements. Valiant’s STM-1(SDH) Transmission Equipment provides full capability to cross-connect at E1 level between all tributaries. The equipment can be used as Terminal Multiplexer (TM) or an Add-Drop-Multiplexer (ADM) to build a point-to-point, ring and chain (add-drop) transmission network.

Features
Application Diagrams

Features and Highlights

Supports upto 63 E1s
1U height, 19-Inch standard rack-mountable chassis
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

All 63 VC12s can be mapped (east or west) in 1+1 protection mode
Out of 63 VC12s, 21 VC12s (43-63) can be mapped to either direction (east or west) without protection (1+0)

Supports point-to-point, ring and chain topology
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.

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 63 E1 interfaces compliant with ITU-T G.703
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.

Timing Mode

Synchronization with STM-1 line timing
Synchronization with timing from any of the E1 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

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