OptiX Metro 100 Product Description [PDF]

Zitiervorschau

Product Description

OptiX Metro 100 Terminal STM-1 Optical Transmission System

Issue Date

HUAWEI TECHNOLOGIES CO., LTD.

Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. Please feel free to contact our local office or company headquarters.

Huawei Technologies Co., Ltd. Address:

Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://www.huawei.com

Email:

[email protected]

Copyright © Huawei Technologies Co., Ltd. 2008. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

Contents 1 Location in the Network Hierarchy ................................................................................ 5 2 Equipment Features ....................................................................................................... 7 2.1 High Integration Design .................................................................................................................... 7 2.2 Low Power Consumption ................................................................................................................. 7 2.3 Easy and Flexible Installation ........................................................................................................... 8 2.4 Multi-Interface Access Capability ..................................................................................................... 8 2.5 Multi-Service Access Capability ....................................................................................................... 8 2.6 Network Level Protection for Multi-Service Signals ......................................................................... 9 2.7 Multiple Management Modes ........................................................................................................... 9 2.8 NM Data Communication with the Third-Party Equipment .............................................................. 9 2.9 Multiple Power Inputs ....................................................................................................................... 9 2.10 Uniform Alarm Management .......................................................................................................... 9 2.11 SSM Management ........................................................................................................................ 10 2.12 Rich Diagnostic Approaches ........................................................................................................ 10 2.13 In-Service Software Upgrade ....................................................................................................... 10 2.14 Easy Operation and Maintenance ................................................................................................ 10 2.14.1 LCD Control Panel............................................................................................................... 10 2.14.2 Web-LCT .............................................................................................................................. 11 2.14.3 Easy Commissioning ............................................................................................................ 11

3 Equipment Architecture ............................................................................................... 13 3.1 Hardware Architecture .................................................................................................................... 13 3.1.1 Appearance ........................................................................................................................... 13 3.1.2 Configuration Types ............................................................................................................... 14 3.1.3 Front Panel ............................................................................................................................ 14 3.2 System Architecture ....................................................................................................................... 17 3.2.1 Boards ................................................................................................................................... 18 3.2.2 STM-1 Line Unit ..................................................................................................................... 18 3.2.3 E1 Tributary Unit .................................................................................................................... 18 3.2.4 Cross-Connect Unit ............................................................................................................... 19 3.2.5 Clock Unit .............................................................................................................................. 19 3.2.6 SCC Unit ................................................................................................................................ 19 3.2.7 Power Unit ............................................................................................................................. 19

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4 Networking Application ................................................................................................ 21 4.1 Network Topology ........................................................................................................................... 21 4.1.1 Independent Networking........................................................................................................ 21 4.1.2 Hybrid Networking with the OptiX Transmission Equipment ................................................. 22 4.2 NM Data Interworking with the Third-Party Equipment .................................................................. 22 4.2.1 Extended D Bytes .................................................................................................................. 22 4.2.2 TP4 (OSI over DCC) .............................................................................................................. 23 4.2.3 IP over DCC........................................................................................................................... 24 4.2.4 SNMP Interface ..................................................................................................................... 25

5 Technical Specifications .............................................................................................. 29 5.1 Hardware Parameters .................................................................................................................... 29 5.2 Optical Interface Performance ....................................................................................................... 29 5.3 PDH Electrical Interface Performance ........................................................................................... 30 5.4 Power Supply ................................................................................................................................. 31 5.5 Environment ................................................................................................................................... 31 5.6 EMC ............................................................................................................................................... 31 5.7 Availability ....................................................................................................................................... 31

A Glossary ........................................................................................................................ 33 B Acronyms and Abbreviations ...................................................................................... 39

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

1

Location in the Network Hierarchy

This chapter describes the network position of the OptiX Metro 100 in the transmission network. As the network terminal unit of transport networks, the OptiX Metro 100 provides STM-1 optical interfaces to access 16 x E1 services. Figure 1-1 shows the location of the OptiX Metro 100 in a transmission network. Figure 1-1 Location of the OptiX Metro 100 in a transmission network

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

2

Equipment Features

This chapter describes the following features of the OptiX Metro 100: 

High integration design



Low power consumption



Easy and flexible installation



Multi-interface access capability



Multi-service access capability



Network level protection for multi-service signals



Multiple management modes



NM data communication with the third-party equipment



Multiple power inputs



Uniform alarm management



SSM management



Rich diagnostic approaches



In-service software upgrade



Easy operation and maintenance

2.1 High Integration Design The OptiX Metro 100 is designed in a case shape. The dimensions of the chassis are 436 mm (W) x 200 mm (D) x 42 mm (H). Except for the power module, all the other functional units are integrated into one circuit board only.

2.2 Low Power Consumption The normal power consumption of the OptiX Metro 100 is about 20 W. There is no need for fans.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

2.3 Easy and Flexible Installation The OptiX Metro 100 features easy and flexible installation. Based on the environment, you can install the OptiX Metro 100: 

In the ETSI 300-mm cabinet or ETSI 600-mm cabinet



In the 19-inch cabinet



In the OC-500 outdoor cabinet. For details, refer to the OC-500 Integrated Chassis User Manual



On the wall



On the desktop

2.4 Multi-Interface Access Capability Table 2-1 lists the external interfaces of the OptiX Metro 100. Table 2-1 Interfaces of the OptiX Metro 100 Interface Type

Function

Connector

STM-1 optical interface

Input/Output the STM-1 optical signal.

SC or LC

E1 electrical interface

Input/Output the 16xE1 electrical signal.

DB44

Management interface

NM-LAN

Connect to NM system, such as, the iManager T2000 or Web-LCT.

RJ-45

Alarm interface

Input/Output alarm interface (ALARM)

Connect to the external centralized alarm equipment or the environment monitoring device.

RJ-45

Power interface

AC interface

Connect to the AC power supply.

3-core socket

DC interface

Connect to the DC power supply.

4-pin socket

Service interface

2.5 Multi-Service Access Capability The OptiX Metro 100 can access: 

16xE1 services



2xSTM-1 services

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2.6 Network Level Protection for Multi-Service Signals The OptiX Metro 100 provides the accessed services with the following protection modes: 

1+1 and 1:1 line multiplex section protection (LMS)



Sub-network connection protection (SNCP)

2.7 Multiple Management Modes The OptiX Metro 100 can be managed by: 

OptiX iManager T2000 NM system



Web-LCT local management system



LCD control panel

2.8 NM Data Communication with the Third-Party Equipment The OptiX Metro 100 communicates the NM data with the third-party equipment through: 

D1–D3 or D4–D12 bytes ECC communication



TP4 (OSI over DCC)



IP over DCC



SNMP

2.9 Multiple Power Inputs The OptiX Metro 100 supports the power inputs below: 

100 V to 240 V AC



-48 V to -60 V DC

2.10 Uniform Alarm Management The OptiX Metro 100 provides three Boolean input interfaces to uniformly manage the alarms and external monitoring equipment. The OptiX Metro 100 also provides one Boolean output interface to output alarms to the centralized alarm system.

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2.11 SSM Management The OptiX Metro 100 supports: 

Standard synchronization status message (SSM)



Extended SSM

2.12 Rich Diagnostic Approaches The OptiX Metro 100 supports the following diagnostic approaches: 

Outloop on STM-1 ports



Inloop and outloop of the VC-4 path



Inloop and outloop of the VC-3 path



Inloop and outloop on E1 ports



Indicators on the equipment



Equipment power-off alarms



LCD control panel



Fault diagnosis function

2.13 In-Service Software Upgrade The OptiX Metro 100 supports in-service upgrade of the NE software and logic software.

2.14 Easy Operation and Maintenance The OptiX Metro 100 provides an LCD control panel and a Web-LCT configuration tool to ease operation and maintenance. The OptiX Metro 100 can start self-test function through the LCD control panel to locate the fault on the equipment conveniently.

2.14.1 LCD Control Panel You can operate the OptiX Metro 100 through the LCD control panel. The LCD control panel provides the following functions: 

Queries and sets the NE ID and IP address.



Queries and sets loopback on ports.



Queries and sets clock source priority.



Queries the impedance type of E1 ports.



Queries equipment software and PCB version.



Queries and sets the type of the D byte channel.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System 

Queries and sets the DCC protocol stack.



Queries and sets the role of the OSI protocol stack.



Queries NE critical alarms.



Queries and sets NE time and NE date.



Starts hardware self-check and queries the result.



Starts fault diagnosis and queries the result.



Modifies the password of Admin.

2.14.2 Web-LCT The OptiX Metro 100 provides the Web-LCT (Local Craft Terminal) software. The software offers good management and configuration functions, with simple interface design and parameter input. It also provides the service configuration wizard for easier operation. The Web-LCT provides the following functions: 

Configuration guide



Equipment configuration



Service configuration



Alarm query



Performance operation



Protection management



Clock configuration



Security management



Equipment maintenance



Data backup

2.14.3 Easy Commissioning Through the LCD control panel, the OptiX Metro 100 can start self-check program to ease the equipment commissioning.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

3

Equipment Architecture

This chapter describes the appearance, system structure and functions of each unit of the OptiX Metro 100.

3.1 Hardware Architecture 3.1.1 Appearance The OptiX Metro 100 allows multiple configuration modes depending on the power modules. These configuration modes are similar in the structure except the available power interface types. Figure 3-1 and Figure 3-2 show several common configurations. Figure 3-1 OptiX Metro 100 with dual pluggable optical interfaces (–48 V to –60 V DC input+16xE1)

Figure 3-2 OptiX Metro 100 with dual pluggable optical interfaces (100 V to 240 V AC input+16xE1)

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3.1.2 Configuration Types The OptiX Metro 100 allows multiple configuration modes depending on the power modules. The modules types are shown in Table 3-1. Table 3-1 Modules provided by the OptiX Metro 100 Module

Optional Configuration Item

Power module

100 V to 240 V AC –48 V to –60 V DC

Line module

Dual optical interfaces, dual-fiber LC (SFP)

Tributary processing module

16xE1 services

NOTE 

SFP: small form-factor pluggable



All PDH tributary units provide the 75-ohm unbalanced interface and the 120-ohm balanced interface.

3.1.3 Front Panel As shown in Figure 3-3, the front panel provides interfaces, buttons and indicators for various purposes. The following section describes the front panel with the configuration of "–48 V to –60 V DC input+2xSTM-1+16xE1". Figure 3-3 Front panel of the OptiX Metro 100 (–48 V to –60 V DC input+2xSTM-1+16xE1)

Interfaces Table 3-2 lists details about the interfaces on the front panel.

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Table 3-2 Interfaces on the front panel No.

Interface

Function

1

Power supply interface



100 V to 240 V AC power module



-48 V to -60 V DC power module(Figure 3-3)

Connector Type 

The connector for the DC power is a 4-pin socket.



The connector for the AC power is a 3-core socket.

2

TX/RX

Optical interface: Input/Output STM-1 optical signals.

LC (SFP)

3

E1 1-8

E1 electrical interface: Input/Output 8xE1 electrical signals.

DB44

4

E1 9-16

E1 electrical interface: Input/Output 8xE1 electrical signals.

DB44

5

NM-LAN

Connect to the NM system to manage and configure the equipment.

RJ-45

6

ALARM

Provide 3-input and 1-output Boolean value.

RJ-45

7

ESD

Connect to an ESD wrist strap. Always wear an ESD wrist strap when operating the equipment to avoid static damage to it.

–

LCD and Operation Buttons You can configure data for the equipment through the LCD and buttons. Table 3-3 lists details about the LCD and buttons on the front panel. Table 3-3 LCD and buttons on the front panel No.

LCD/Button

Function

8

Power

Power switch, used to power on/off the power supply.

9

LCD

Used to show the equipment configuration and query result.

10

ENT/MENU

11

ACO

Audible alarm cut button, used to turn off/on an audible alarm.

12

RST

Reset button (RESET), used to reset the equipment.

Used along with buttons ESC, , and equipment and query the configuration.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

No.

LCD/Button

Function

13

LAMP TEST

Used to test the LED test. Pressing it turns on all indicators on the front panel except the ALARM indicator. Releasing it renews all indicators to the working state.

Indicators On the front panel, there are indicators for optical signals, E1 service signals and Ethernet service signals. You can judge whether the equipment is working normally through these indicators. Table 3-4 describes each indicator on the front panel. Table 3-4 Indicator on the front panel Indicator

Status

Description

LOS (loss of line signal indicator)

On.

The STM-1 optical interface cannot receive the optical signals or the optical power is too low.

RUN (running indicator)

Flashes 10 times every second.

The NE software is being loaded, or the SCC board self-check state is entered.

Off.

The NE software is lost, waiting to be loaded.

Flashes once every second.

Normal operation.

MAJ (major alarm indicator)

Flashes.

The critical or major alarm occurs.

MIN (minor alarm indicator)

Flashes.

The minor alarm occurs.

ACO (alarm cut indicator)

On.

The equipment has cut the alarm sound.

E1 (multicolor indicator alerting loss of E1 signal)

Off.

E1 port is not used.

Constantly on, red.

An E1_LOS alarm occurs to the E1 path. Each E1 path corresponds to one multicolor indicator.

Flashes, red.

The major alarm (not E1-LOS) occurs to the E1 path.

Constantly on, yellow.

The minor alarm occurs to the E1 path.

Flashes, yellow.

BIP_EXC alarm occurs to the E1 path.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

Indicator

Status

Description

Constantly on, green.

The E1 path is in use and no alarm occurs.

Indicator of RJ-45:

On.

The link connection is normal.

LINK (green)

Off.

The link is not connected or broken.

Indicator of RJ-45:

Flashes or on.

Data is being transmitted.

ACT (yellow)

Off.

No data is being transmitted.

3.2 System Architecture For the OptiX Metro 100 accessing multiple services, its system architecture is divided functionally into the following parts. See Figure 3-4. 

STM-1 line unit



E1 tributary unit



Cross-connect unit



Clock unit



SCC unit



Power unit

Figure 3-4 ptiX Metro 100 system architecture

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3.2.1 Boards The OptiX Metro 100 integrates multiple functional units on a hardware backplane. For easy management and maintenance, each functional unit consists of different physical boards. Table 3-5 lists the physical boards of each functional unit. Table 3-5 Physical boards of the OptiX Metro 100 Boards

Function

In

PIW48

–48 V to –60 V DC power

Slot1

PWAC

100 V to 240 V AC power

Slot1

SCC

System control and communication board

Slot2

SFP

Small form-factor pluggable, optical module, line board

Slot3

XCSA

ADM cross-connect board

Slot4

STGA

ADM clock board

Slot5

FP1D

16xE1 tributary board

Slot6

3.2.2 STM-1 Line Unit The OptiX Metro 100 can form an ADM when configured with the SFP line unit. The STM-1 line unit provides the following functions: 

Processes up to two STM-1 signals.



Provides alarms and performance events for checking line modules.



Provides outloop on the line port, inloop/outloop of the VC-4 path and automatic release of the software loopback for quick fault location.



Supports automatic laser shutdown (ALS) function.



Supports S-1.1 optical module, and transmits distance is 15km.



Provides small form-factor pluggable (SFP) optical modules and supports LC interfaces.

3.2.3 E1 Tributary Unit The OptiX Metro 100 can form different equipment types when configured with different tributary units like 75-ohm or 120-ohm FP1D. The FP1D tributary unit provides the following functions: 

Processes up to 16xE1 signals.



Supports the I.421 NT1 feature.



Collects the alarms and performance events of the VC-12 channel.



Provides inloop/outloop to E1 signals for fast fault location.



Provides E1 signal pseudo-random binary sequence test function.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System 

Extracts the 2 MHz clock of the first and ninth E1 signals and sends it to the clock unit as the tributary clock source.



Provides the 75-ohm or 120-ohm interface impedance (the impedance of the interface is defined before delivery). NOTE

In the I.421 working mode, the tributary unit does not support the pseudo-random binary sequence (PRBS) test.

3.2.4 Cross-Connect Unit The cross-connect unit (XCS) is a functional unit necessarily configured for various OptiX Metro 100 equipment types. The cross-connect unit provides the following functions: 

Provides the service grooming capability of the add/drop multiplexer (ADM) .



The cross-connect unit of ADM supports 4x4 VC-4 full cross-connection, 12x12 VC-3 full cross-connection and 252x252 VC-12 full cross-connection.

3.2.5 Clock Unit The clock unit (STGA) is a functional unit necessarily configured for various OptiX Metro 100 equipment types. The clock unit provides the following functions: 

Provides clock synchronization for the STM-1 line unit and E1 tributary unit.



Locks the line clock of the STM-1 line unit or the first and the ninth tributary clock source of the E1 tributary unit.



The clock unit (STGA) supports the locked mode, holdover mode and free-run mode.



Provides five clock sources: two line clock sources, two tributary clock sources and one internal clock source.

3.2.6 SCC Unit The SCC unit is a functional unit necessarily configured for various OptiX Metro 100 equipment types. The SCC unit provides the following functions: 

Provides data communication channels (DCC) to communicate with remote NEs.



Communicates with the STM-1 signal processing unit and E1 signal processing unit, to monitor their alarms and performances, and report them to the NM system.

3.2.7 Power Unit The OptiX Metro 100 supports 100 V to 240 V AC input and –48 V to –60 V input, to provide power supply for the service units.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

4

Networking Application

This chapter describes the network topology for the OptiX Metro 100 and NM data interworking between the OptiX Metro 100 and the third-party equipment.

4.1 Network Topology The OptiX Metro 100 is applied as the network terminal unit of the transmission network. The traffic is light and the networking is simple. The OptiX Metro 100 may form a network alone, or work with other transmission equipment, such as the OptiX 155/622H(Metro1000).

4.1.1 Independent Networking The OptiX Metro 100 supports the NE type of ADM. It can form chain networks and ring networks independently, as shown in Figure 4-1 and Figure 4-2. Figure 4-1 Chain network composed of the OptiX Metro 100

Figure 4-2 Ring network composed of the OptiX Metro 100

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4.1.2 Hybrid Networking with the OptiX Transmission Equipment The OptiX Metro 100 can work with other transmission equipment in a network. See Figure 4-3. Figure 4-3 Hybrid networking with other equipment

4.2 NM Data Interworking with the Third-Party Equipment 4.2.1 Extended D Bytes As shown in Figure 4-4, the OptiX Metro 100 is interconnected with the third-party equipment. You can flexibly configure the NM data on the D1-D3 or D4-D12 bytes at the cross points of the OptiX Metro 100 and third-party equipment. Figure 4-4 Hybrid networking through extended D bytes

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

4.2.2 TP4 (OSI over DCC) OSI over DCC means performing DCC communication with OSI protocol stack without occupying extra overhead or service channels. It can fulfill the different demands for the DCC interworking and networking among the equipment of different venders. OSI over DCC can realize the NM data interworking among the equipment of different venders.

Managing the OptiX Equipment Through OSI DCN This means directly managing the network composed of the OptiX equipment with the routing function at the third layer of OSI data communication network (DCN). See Figure 4-5. Figure 4-5 Managing the OptiX equipment through OSI DCN

Managing the OptiX Equipment Through OSI Network Composed of the Third-Party Equipment This means managing the network composed of the OptiX equipment with the routing function at the third layer of OSI protocol stack of the third-party equipment. See Figure 4-6. Figure 4-6 Managing the OptiX equipment through OSI network composed of the third-party equipment

Traversing the OptiX Equipment to manage the Third-Party Equipment This means managing the third-party equipment that adopts the OSI protocol stack with the routing function of the OSI protocol stack of the OptiX equipment. See Figure 4-7.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

Figure 4-7 Traversing the OptiX equipment to manage the third-party

4.2.3 IP over DCC IP over DCC indicates the NM data interworking at the network layer and adopts IP protocol sharing to transmit the NM data. The GNE, DCN and element management system (EMC) must support the IP protocol at the same time. As a result, the network composed of the third-party equipment and that composed of the OptiX Metro 100 can form a DCN based on the standard protocol. There are two ways of networking based on IP over DCC: 

The NM data of the OptiX Metro 100 is transparently transmitted by the third-party equipment through IP over DCC. See Figure 4-8.



The NM data of the third-party equipment is transparently transmitted by the OptiX Metro 100 through IP over DCC. See Figure 4-9.

Figure 4-8 NM data transparently transmitted by the third-party equipment

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

Figure 4-9 Transparently transmitting the NM data of the third-party equipment

4.2.4 SNMP Interface SNMP is a standard NM protocol based on the user datagram protocol (UDP) communication. The OptiX Metro 100 provides an interface that supports the SNMP protocol. Any NM system that supports the SNMP protocol can access and manage the OptiX Metro 100 through this interface.

Interconnecting the NM System and NE Directly Through the IP Network The SNMP NM system is directly interconnected with the OptiX Metro 100 through the IP network, as shown in Figure 4-10.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

Figure 4-10 Interconnecting the SNMP NM system and NE directly through the IP network

The SNMP interface does not receive or transmit the NM communication packet through the communication modules, but directly monitors the UDP161 port and waits for the NM request at this port. The SNMP sends the active reporting packet (event report) to the UDP162 port (configurable) of the NM system. In this networking mode, the NM system must configure the SNMP NM configuration data and issue the NM data, including the IP reporting port of the NM system, read-write community name and reporting packet version, to the NE to be accessed through the non-SNMP NM system previously. The NM system can directly access the equipment and adopt direct UDP communication with the SNMP interface. Otherwise, the SNMP NM system cannot access the NE.

Managing the Remote NE Through SNMP over ECC by the NM System The SNMP NM system manages the remote NE (OptiX Metro 100) through the NE IP transparent transmission. See Figure 4-11.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

Figure 4-11 Managing the remote NE (OptiX Metro 100) through the NE IP transparent transmission by the SNMP NM system

The SNMP protocol adopts UDP as its protocol at transport layer, requiring direct IP communication between the NM system and the equipment. The OptiX Metro 100 supports the IP transparent transmission, so the SNMP NM system can directly access the remote NE. All the NEs in the sub-network must support IP over DCC. Otherwise, the SNMP NM system is refused to access the remote NE. Before accessing the remote NE, you must configure the NM configuration data of the remote NE. Otherwise, the SNMP NM system cannot access the remote NE.

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

5

Technical Specifications

For ease of query, this chapter summarizes the technical specifications of the OptiX Metro 100.

5.1 Hardware Parameters Table 5-1 lists the weight, dimensions and power consumption of the OptiX Metro 100. Table 5-1 Hardware parameters of the OptiX Metro 100 Equipment

Power Consumption

Weight

Dimensions

OptiX Metro 100

In full configuration, it is about 17 W.

In full configuration, it is about 3 kg.

436 mm (W) x 200 mm (D) x 42 mm (H)

5.2 Optical Interface Performance Table 5-2 lists the performance of the STM-1 optical interface. Table 5-2 STM-1 optical interface performance Item

Performance Value

Rate

155520 kbit/s

Optical module

S-1.1

Working wavelength range

1261 nm to 1360 nm

Mean launched power

-8 dBm to -15 dBm

Minimum extinction ratio

8.2 dB

Minimum sensitivity

-28 dBm

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OptiX Metro 100 Terminal STM-1 Optical Transmission System

Item

Performance Value

Minimum overload

-8 dBm

Allowable frequency deviation at the optical input

±20 ppm

5.3 PDH Electrical Interface Performance Table 5-3 lists the performance of the E1 electrical interface. Table 5-3 E1 electrical interface performance Item

Performance Value

Standard Compliance

Rate

2048 kbit/s

–

Code

HDB3

–

Allowable frequency deviation at the input

2048 kbit/s±50 ppm

ITU-T G.703

Jitter tolerance at the input

f1 (20 Hz): ≥18 UI

ITU-T G.823

f2 (2.4 kHz): ≥18 UI f3 (6 kHz/8 kHz): ≥1.5 UI f4 (100 kHz): ≥1.5 UI AIS signal bit rate at the output

±50 ppm

ITU-T G.703

Mapping jitter at the tributary interface

B1 (f1–f4): 0.4 UIp-p

ITU-T G.783

Combined jitter at the tributary interface

B1 (f1–f4): 0.4 UIp-p

System output jitter at the tributary interface

B1 (f1–f4): 1.5 UIp-p

B2 (f3–f4): 0.075 UIp-p ITU-T G.783

B2 (f3–f4): 0.075 UIp-p ITU-T G.823

B2 (f3–f4): 0.2 UIp-p

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5.4 Power Supply Table 5-4 lists the power supply parameters of the OptiX Metro 100. Table 5-4 Power supply parameters Power Supply

Input Voltage Range

100 V to 240 V AC

90 V to 260 V

–48 V to –60 V DC

–38.4 V to –72 V

5.5 Environment Table 5-5 lists the environment indexes of the OptiX Metro 100. Table 5-5 Environment indexes Environment Condition

Temperature

Humidity

Long-term normal working condition

0℃ to 45℃

10% to 90%

Short-term working environment

–5℃ to 0℃

5% to 10%

–45℃ to 50℃

90% to 95%

Short-term: The consecutive working time does not exceed 96 hours and the accumulative working time each year does not exceed 15 days. The value of temperature and humidity of the equipment is measured 1.5 meters above the ground and 0.4 meter before the equipment.

5.6 EMC The electromagnetic compatibility (EMC) design of the OptiX Metro 100 is compliant with the ETSI ETS EN 300386 recommendations.

5.7 Availability The availability of the OptiX Metro 100 is 99.999%.

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A

Glossary

1 19-inch cabinet

A cabinet which is19 inches in width and 600mm in depth, compliant with the standards of the IEC297.

A add/drop multiplexer

A multiplexer capable of extracting and inserting lower-rate signals from a higher-rate multiplexed signal without completely demultiplexing the signal.

ADM

add/drop multiplexer.

administrator

A user who has authority to access all the Management Domains of the EMLCore product. He has access to the whole network and to all the management functionalities.

AIS

Alarm Indication Signal. A signal sent downstream in a digital network if an upstream failure has been detected and persists for a certain time.

asynchronous

A network where transmission system payloads are not synchronized and each network terminal runs on its own clock.

attenuation

Reduction of signal magnitude or signal loss, usually expressed in decibels.

auto-negotiation

The rate/work mode of the communication party set as self-negotiation is specified through negotiation according to the transmission rate of the opposite party.

availability

The foundation for many Bellcore reliability criteria is an end-to-end two-way availability of objective of 99.98% for interoffice applications (0.02% unavailability or 105 minutes/year down time). The objective for loop transport between the central office and the customer premises is 99.99%. For interoffice transport, the objective refers to a two-way broadband channel, e.g. SONET OC-N, over a 250-mile path. For loop applications, the objective refers to a two-way narrowband channel, e.g. DS0 or equivalent.

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B BIP

BIP-X code is defined as a method of error monitoring. With even?parity an X-bit code is generated by the transmitting equipment over a specified portion of the signal in such a manner that the first bit of the code provides even parity over the first bit of all X-bit sequences in the covered portion of the signal, the second bit provides even parity over the second bit of all X-bit sequences within the specified portion, etc. Even parity is generated by setting the BIP-X bits so that there is an even number of 1s in each monitored partition of the signal. A monitored partition comprises all bits which are in the same bit position within the X-bit sequences in the covered portion of the signal. The covered portion includes the BIP-X.

BITS

Building Integrated Timing Supply. A building timing supply that minimises the number of synchronisation links entering an office. Sometimes referred to as a synchronisation supply unit.

C chain network

One type of network that all network nodes are connected one after one to be in series.

channel

The smallest subdivision of a circuit that provides a type of communication service; usually a path with only one direction.

client

A kind of terminal (PC or workstation) connected to a network that can send instructions to a server and get results through a user interface. See also server.

clock tracing

The method to keep the time on each node being synchronized with a clock source in a network.

D DCN

Data Communication Network. A communication network within a TMN or between TMNs which supports the data communication function (DCF).

DDF

Digital Distribution Frame. A frame which is used to transfer cables.

domain

The domain of the T2000 specifies the scope of address or functions which are available to a certain user.

E ECC

Embedded Control Channel. An ECC provides a logical operations channel between SDH NEs, utilizing a data communications channel (DCC) as its physical layer.

ESD

Electrostatic Discharge. The phenomena the energy being produced by electrostatic resource discharge instantly.

ETSI

European Telecommunications Standards Institute.

extended ID

The serial number of a subnet where an NE resides, which is usually used to distinguish different network segments in a WAN. An extended ID and an ID form the physical ID of an NE.

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F frame

A cyclic set of consecutive time slots in which the relative position of each time slot can be identified.

H hardware loopback

A method to use a fiber to connect the receiving optical interface with the transmitting one on a board. It performs transmission tests, which method usually does not require the assistance of personnel at the served terminal.

I IP over DCC

The IP Over DCC follows TCP/IP telecommunications standards and controls the remote NEs through the Internet. The IP Over DCC means that the IP over DCC uses overhead DCC byte (the default is D1-D3) for communication.

J jitter tolerance

For STS-N electrical interfaces, input jitter tolerance is the maximum amplitude of sinusoidal jitter at a given jitter frequency, which results in no more than two errored seconds cumulative, when the signal is modulated at an equipment input port. These errored seconds are integrated over successive 30 second measurement intervals. Requirements on input jitter tolerance as just stated, are specified in terms of compliance with a jitter mask, which represents a combination of points. Each point corresponds to a minimum amplitude of sinusoidal jitter at a given jitter frequency which results in two or fewer errored seconds in a 30 second measurement interval when the signal is modulated at the equipment input port. For the OC-N optical interface, it is defined as the amplitude of the peak-to-peak sinusoidal jitter applied at the input of an OC-N interface that causes a 1 dB power penalty.

jitter

Short waveform variations caused by vibration, voltage fluctuations, control system instability, etc.

L link

A "topological component" that provides transport capacity between two endpoints in different subnetworks via a fixed (i.e., inflexible routing) relationship. The endpoints are "subnetwork termination point pools" for SONET, and link termination points for ATM. Multiple links may exist between a pair of subnetworks. A link also represents a set of "link connections".

loopback

The fault of each path on the optical fibre can be located by setting loopback for each path of the line. There are three kinds of loopback modes: No loopback, Outloop, Inloop.

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M MAC

Media Access Control. The data link sublayer that is responsible for transferring data to and from the Physical Layer.

mapping

A procedure by which tributaries are adapted into virtual containers at the boundary of an SDH network.

MSP

The MSP function provides capability for switching a signal between and including two MST functions, from a working to a protection channel.

multiplexer

An equipment which combines a number of tributary channels onto a fewer number of aggregate bearer channels, the relationship between the tributary and aggregate channels being fixed.

N NE explorer

NE Explorer is the main operation interface of the T2000. For easy navigation, the NE Explorer window presents an expandable directory tree (Function Tree) in the lower left pane. The configuration, management and maintenance of the equipment are accessed here.

O ODF

Optical Distribution Frame. A frame which is used to transfer and spool fibers.

P pass-through

The action of transmitting by a node exactly what is received by that node for any given direction of transmission. A pass-through can be unidirectional or bidirectional. For BLSRs, a pass-through refers to the K1 and the K2 bytes and the protection channels. Three types of pass-throughs are used in BLSRs: K byte passthrough, unidirectional full pass-through, and bidirectional full pass-through.

PDH

Plesiochronous Digital Hierarchy. PDH is the digital networking hierarchy that was used before the advent of Sonet/SDH.

S SDH

Synchronous Digital Hierarchy. A hierarchical set of digital transport structures, standardized for the transport of suitably adapted payloads over physical transmission networks.

self-healing

Establishment of a replacement connection by network without the NMC function. When a connection failure occurs the replacement connection is found by the network elements and rerouted depending on network resources available at that time.

SFP

small form-factor pluggable.

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SSM

Synchronization Status Message. ITU-T defines S1 byte to transmit the network synchronization status information. It uses the lower four bits of the multiplex section overhead S1 byte to indicate 16 types of synchronization quality grades.

subnet mask

Also referred to as the network mask off code. It is used to define network segments, so that only the computers in the same network segment can communicate with one another, thus suppressing broadcast storm between different network segments.

subnet

The logical entity in the transmission network and comprises a group of network management objects. A subnet can contain NEs and other subnets. A subnet planning can enhance the organization of a network view.

synchronous

A network where transmission system payloads are synchronized to a master (network) clock and traced to a reference clock.

U UAT

Unavailable Time. A UAT event is reported when the monitored object generates 10 consecutive severely errored seconds (SES) and the SESs begin to be included in the unavailable time. The event will end when the bit error ratio per second is better than 10-3 within 10 consecutive seconds.

W WTR time

A period of time that must elapse before a – from a fault recovered – trail/connection can be used again to transport the normal traffic signal and/or to select the normal traffic signal from.

WTR

Wait to Restore. This command is issued when working channels meet the restoral threshold after an SD or SF condition. It is used to maintain the state during the WTR period unless it is pre-empted by a higher priority bridge request.

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B

Acronyms and Abbreviations

A ADM

add/drop multiplexer

AIS

Alarm Indication Signal

APS

Automatic Protection Switch(ing)

B BER

Bit Error Ratio

BIP

Bit-Interleaved Parity

BITS

Building Integrated Timing Supply System

C CRC

Cyclic Redundancy Code

D DCC

Data Communication Channel

DCN

Data Communication Network

DDF

Digital Distribution Frame

E ECC

Embedded Control Channel

ESD

electrostatic discharge

ETSI

European Telecommunications Standards Institute

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G GUI

Graphic User Interface

I IEEE

Institute of Electrical and Electronics Engineers

ISDN

Integrated Services Digital Network

ITU-T

International Telecommunication Union - Telecommunication Standardization Sector

L LCD

Liquid Crystal Display

LCT

Local Craft Terminal

M MSP

Multiplex Section Protection

O ODF

Optical Distribution Frame

OSI

open systems interconnection

P PDH

Plesiochronous Digital Hierarchy

S SDH

Synchronous Digital Hierarchy

SFP

Small Form-Factor Pluggable

SNCP

Sub-Network Connection Protection

SSM

Synchronization Status Message

W WTR

Wait-to-Restore

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