STM-1 Add-Drop Multiplexer with 16E1 and 4 Ethernet

VCL Products > STM/SDH Multiplexer > STM-1 Add-Drop Multiplexer

STM-1 (Optical / Electrical) 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 8/16 E1 Interfaces 1 VCG, 4 VCG or GigE Ethernet Interfaces

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