Tài liệu Soneplex Broadband and Soneplex Loop Extender Systems Alarm/Performance Remote Retrieval Options pdf

Application Note 1207® Telecommunications Soneplex Broadband and Alarm/Performance Remote Retrieval Options This application note provides detailed alternatives for transporting the Sone

Application Note 1207

®

Telecommunications

Soneplex Broadband and

Alarm/Performance Remote

Retrieval Options

This application note provides detailed alternatives for transporting the Soneplex Broadband and Soneplex Loop Extender alarm and performance information from a remote location back to the central/hubbing location

The Soneplex Broadband System is used as an intelligent network hub for DS1 hicap distribution in the local loop The network interface is one standard electrical DS3 signal This DS3 signal is demultiplexed into twenty-eight DS1 circuits, which can then be delivered to up to twenty-eight remote locations utilizing either fiber or copper facilities

Overview

®

®

MPU

D L X

H L X C

H L X C

R L X

O D S 2 W

O D S 2 P

Q L X W

T R T R

OPTICAL DS2 (6.3 Mbps)

DS3

2B1Q

H L X R

Q L X P

H L X R

X.25

TBOS

EIA-422

EIA-232

CRAFT INTERFACE

The Soneplex Loop Extender System is an intelligent network element providing DS1 services in point-to-point or point-to-multipoint applications The network interface is twenty-eight standard electrical DS1 signals The system can be used in a stand-alone configuration or with any multiplexer or network element that generates a standard DS1 signal

Overview

OSS Interfaces The Soneplex systems provide several different monitoring and alarming interfaces that

may be connected either locally or remotely to an external alarm collection device The Soneplex chassis has 5 physical ports used for interconnection to the external alarm network A brief description of the ports and their functionality follows:

Craft Interface, TL1 or TBOS

EIA-232 These five ports are tied to the main processor unit (MPU) located in the right hand slot

of both chassis Each system module within the Soneplex Broadband and Soneplex Loop Extender chassis provides provisioning, alarm and performance information that is uploaded to the MPU The MPU disseminates and stores the total system performance and provides the OS interfaces listed above The MPU contains a central processor and non-volatile memory In addition, each module has front panel LED indicators for visible identification of module status

The ADC DS3 Fiber Loop Converter (FLC) (referred

to throughout this applica-tion note) interfaces with one DS3 signal and con-verts the signal to an optical signal This signal

is then transported to a remote DS3 FLC where it

is converted back from an optical signal to an electri-cal signal This system can

be configured in an unprotected or 1:1 pro-tected configuration

Figure 2

H L X

H L X

H L X

H L X

L X

Q L X

12 13 14 15 16 17 15 19 20 21 22 23 24 R

L X

26 27 28 M

U

CENTRAL OFFICE/ HUB

CUSTOMER PREMISES

REMOTE ONE POSITION

WALL MOUNT CHASSIS

H

L

X

CUSTOMER PREMISES REMOTE RACK MOUNT

OR WALL MOUNT CHASSIS

400 STYLE MOUNTING UP TO 4 HLXR

Q L X

Q L X

UP TO 20 MILES

H L X

H L X

H L X

CSU NID

DS1 (3000' BETWEEN SPAN REPEATERS)

TBOS

EIA-422

EIA-232

X.25

CUSTOMER PREMISES REMOTE WALL MOUNT CHASSIS

UP TO FOUR QLXs PER CHASSIS

CUSTOMER PREMISES

The communication ports, the MPU and APU modules are the same for both the Soneplex Broadband and Soneplex Loop Extender systems

Rear View

Soneplex Loop Extender Chassis

Soneplex Broadband Chassis

Rear View with Cover Removed

Figure 3

Figure 4

2 - 4

RX

NO -| | C -|/| - NC ALARM

CR VIS

CR AUD

MJ VIS

MJ AUD

MN VIS

MN AUD RMT

RX PORT 4 + -+ -PORT 1

+ -+ -ACO IN

PORT 3 DTE PORT 2 DTE

J-29 J-30

SHIELD GND

1 4 7 1 4 7

1-1 1-2 1-3 1-4 2-1 2-2

2-3 3-1 3-3 4-1 4-3 5-1 5-3 6-1 6-3 7-1

7-3

2-4 3-2 3-4 4-2 4-4 5-2 5-4 6-2 6-4 7-2 7-4

BITS SEC BITS PRI DS1

HSKP IN -1- -4-

-7 48 A RTN A FRAME GND

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

T1 R1 L2 T L1 T1 R1 L2

T L1

STS - 1/DS3 TX RX

PORT 4 CHASSIS

TO CHASSIS

CRITICAL/MAJOR/MINOR AND HOUSEKEEPING ALARMS PORT 1

TBOS PORT 2CRAFT/TL1 PORT 3X.25/TBOS/

CRAFT/TL1

CRITICAL / MAJOR / MINOR AND HOUSEKEEPING ALARMS

PORT 1 TBOS

PORT 2 TBOS/CRAFT/TL1 PORT 3 X.25/TBOS/

CRAFT/TL1

-48 V POWER

A AND B FEEDS FRAME GROUND

Dry Relay Contacts

The Soneplex Broadband and Soneplex Loop Extender chassis have critical, major, minor and remote dry relay contacts for alarming

The alarm processor unit (APU) provides the critical, major and minor alarm indications and dry relay contacts for the Soneplex Broadband and Soneplex Loop Extender systems These alarms are available as normally open or normally closed contacts which appear as wire-wrap pins on the backplane Eight housekeeping alarm inputs which appear as contact wire-wrap pins are also located on the chassis backplane These housekeeping alarm inputs are retrieved by the MPU and are reported through the craft interface, TBOS, TL1 commands and the X.25 port

TBOS

The TBOS (Telemetry Byte Oriented Serial Protocol) interface is used for status and control The TBOS interface is a reliable and easy to use means of communicating transmission alarm information between a monitoring system and the Soneplex system TBOS communications may also be optioned through the craft interface, Port 1, Port 2,

or Port 3

The TBOS ports are configured as an asynchronous, serial, half-duplex interface operat-ing at either EIA-422 or EIA-232 signal levels at a speed of 2400 bps The Soneplex Broadband and Soneplex Loop Extender systems each use 8 displays, 512 bits Status and command displays are supported

TL1 Interface

Transaction Language 1 (TL1) commands may be used to communicate with both the Soneplex Broadband and Soneplex Loop Extender systems either locally or from a remote location TL1 communication may be optioned through the craft interface port, Port 2 or Port 3 A full complement of TL1 commands and responses are supported including:

• loop back

Craft Interface

Three EIA-232 25-pin D subminiature connectors provide the craft interface for a VT100

or compatible terminal One connector is located on the MPU front panel and is config-ured as a DCE for local operation Port 2 and Port 3 are located on the rear of the chassis and are configured as a DTE for remote operation The craft interface may be optioned for auto baud or data rates up to 9600 bps The craft interface provides local and remote access for provisioning, performance monitoring and administrative tasks

X.25 Interface

Port 3 is a serial EIA-232 25-pin D subminiature connector that can support two logical connections over an X.25 connection These two logical connections are in the form of permanent virtual circuits (PVC) The PVCs can be configured for craft interface or TL1 commands

Option 1

Alarming via Dry

Relay Contacts

The first option to bring back remote alarms to a central location takes the dry relay contacts of the Soneplex Broadband system and/or the battery back-up system and transports them to the central location using the DS3 FLC overhead As seen in Figure

5, the Soneplex chassis and battery back-up are fed into the DS3 FLC housekeeping alarm inputs at the remote location and are reported back through the fiber optic overhead to the central location where they are monitored through either TBOS or dry relay contacts Each DS3 FLC is capable of transporting one remote housekeeping alarm back to the central location which equates to a total of two alarms when operating

in the DS3 protect configuration This option works when the DS3 FLC is used as a fiber optic transport back to the central location Typically, the DS3 FLCs are installed

in pairs, providing 1:1 protection of the DS3 circuit Therefore, two housekeeping alarm indications may be transferred back to the central location It is recommended that the major alarm, which indicates the loss of one or more DS1 signals, be designated for transfer The second alarm can be used for minor alarms from the Soneplex or battery back-up system

NOTE:

• FLC MPU is not required for operation If TBOS is required at a central location, an FLC MPU is required

• DS3 FLCs shown in a protected configuration

Figure 5

(1) DS3 ELECTRICAL

ALARM ALARM

(1) ELECTRICAL DS3

TBOS

REMOTE ALARM DRY RELAY CONTACTS

SONEPLEX BROADBAND CHASSIS

BATTERY BACK-UP SYSTEM

DS3 FLC

DS3 FLC

MPU

W

P

DS3 FLC

DS3 FLC W

P

-48 Vdc

The dry relay contacts of the Soneplex Loop Extender chassis and/or the battery back-up system can also be transported to the central location using the housekeeping alarm inputs of a fiber optic terminal (FOT) Typically, each FOT has 8 to 20 housekeeping alarm inputs; therefore, a number of selected dry relay alarm contacts can be trans-ported back to the central location The alarms available on the Soneplex Loop Extender chassis include the critical, major, minor and remote alarm contacts As seen in Figure

6, these alarms are embedded into the fiber optic overhead of the FOT, brought back to the central location All the designated remote alarms are recovered and delivered to an alarm collection device

Figure 6

Alarming via Dry

Relay Contacts and

Dial-Up Line

CENTRAL LOCATION REMOTE LOCATION

ALARMS ALARMS

T1s 1

28

FOT

BATTERY BACK-UP SYSTEM

1 28 T1s

FOT

REMOTE ALARMS

ALARM COLLECTION DEVICE

SONEPLEX LOOP EXTENDER CHASSIS

The addition of a dial-up line to Option 1 greatly enhances the network visibility from the central monitoring location The dry relay contacts give a broad overview of the health of the network Once an alarm is detected at the remote location, a technician at the central monitoring location can dial-up the Soneplex Broadband or Soneplex Loop Extender system via a modem link and interrogate the system using the craft interface This allows full visibility to performance monitoring, alarming and provisioning infor-mation Refer to Option 2 for modem connection procedure

Advantages

• No additional expense

is required, yet operational status of DS1 circuits can be verified through transmitting the Soneplex system major alarm signal

• Loop backs can provide segmentation over the fiber optic network through the DS3 FLC

• No remote performance monitoring or

provisioning capability from the central location

Disadvantages

Option 1

Advantages/

Disadvantages

The second option requires the installation of a dedicated phone line between the remote and central locations This configuration will provide complete alarming information, performance monitoring and provisioning visibility at the central location The front panel EIA-232 craft interface port, Port 2, or Port 3 of both the Soneplex Broadband and the Soneplex Loop Extender systems are connected to a modem for transport to an alarm collection device at the central location via the dedicated phone line (see Figure 7) If the front panel EIA-232 is used, a null modem cable is required to connect to a modem Port

2 is configured as a DTE; therefore, a null modem cable is not required

Option 2

Dedicated Phone Line

DEDICATED PHONE LINE

CENTRAL LOCATION REMOTE LOCATION

MODEM MODEM

ALARM COLLECTION DEVICE OR TERMINAL TBOS/TL1/ CRAFT

FRONT PANEL PORT, PORT 2 OR PORT 3

SONEPLEX BROADBAND OR LOOP EXTENDER CHASSIS

Figure 7

DEDICATED PHONE LINE

TL1/CRAFT/ TBOS

OR DRY CONTACT ALARMS

REMOTE LOCATION

FOT

M O E M

ALARM COLLECTION DEVICE

M O E M

ALARM COLLECTION DEVICE

CENTRAL LOCATION

SONEPLEX BROADBAND CHASSIS

SONEPLEX LOOP EXTENDER CHASSIS

X.25 EIA-232 EIA-422

If multiple network elements exist at the remote location, one alarm collection device with an inte-grated modem can be utilized to collect many alarm interfaces from the different network elements (see Figure 8) This structure also trans-ports the alarming information via a dedicated phone line

to the central location

Figure 8

• Complete alarm information, performance monitoring and provisioning capability can be accessed from a remote location

• Additional costing required to supplement the purchase and installation of the transport equipment

• A dedicated phone line is required

to maintain data communication

Disadvantages Advantages

Option 2

Advantages/

Disadvantages

The third option for retrieving alarms from a remote location utilizes a 64 Kbps channel

of either a channel bank or digital loop carrier (DLC) (see Figure 9) The transmission equipment OSS ports interface with the alarm collection device that is equipped with a

64 Kbps serial interface that can be fed into a channel bank/DLC The channelized DS1 output of the channel bank/DLC is brought into either the Soneplex Broadband system

or FOT for transport back to the central location The alarm information uses the bandwidth of 1 DS0 within the corresponding DS1 The other 23 DS0s remain available for other applications To access alarm information at the central location, the signal must again be fed through a channel bank and demultiplexed to the 64 Kbps signal

Option 3

Integrated Alarm

Retrieval

Figure 9

Disadvantages Advantages

• Additional costing potentially required to supplement the purchase and installation of the alarm collection device

• Complete alarm information, performance monitoring and provisioning capability can be accessed from a remote location

• Alarm equipment is capable of supporting future systems

• Various alarm collection devices are presently utilized in the network structure; therefore, the system may already be deployed within the desired locations

• Utilizes existing network structure

to transmit the performance data

Option 3

Advantages/

Disadvantages

TL1/CRAFT/ TBOS

OR DRY CONTACTS

REMOTE LOCATION

FOT (or)

CENTRAL LOCATION

CHANNEL BANK

OR DLC

ALARM COLLECTION DEVICE

DS3 FLC

CHANNEL BANK

FOT (or)

DS3 FLC

DS1

64 Kbps ALARMS

SONEPLEX SYSTEM

SONEPLEX LOOP EXTENDER CHASSIS

DS1

64 Kbps

SONEPLEX SYSTEM

Option 4

Addition of Data

Service Unit (DSU)

The fourth option consists of adding a data service unit (DSU) at the remote location The DSU interfaces with the Soneplex system subrate data ports and outputs a 64 Kbps signal The configurations shown in Figures 10 and 11 provide complete alarm informa-tion, performance monitoring and provisioning capability while utilizing the existing delivery platform The DSU will provide the interface from the Soneplex OSS functional-ity to the network If the Soneplex Broadband system is deployed at the remote location, the selected OSS port (whether craft interface, TL1 or TBOS) is brought into the DSU data port where the signal is formatted for transport utilizing one of the 28 DS1 signals

A DS1 Loop Extender (DLX) access module will provide the interface between the DSU and the network The DS1 is multiplexed into the DS3, transported to the central location by the DS3 FLC At the central location, the DS3 is demultiplexed and the DS1 carrying the OSS communication is brought to the network element which recovers the data port, i.e., channel bank or DSU

DS1s

REMOTE LOCATION

SONEPLEX BROADBAND CHASSIS

CENTRAL LOCATION

DS3 FLC

DS3 FLC

1

28

DS1 TBOS/

CRAFT/

TL1

DSU

DS3 FLC

DS3 FLC M1/3

DS1 TO CHANNEL BANK/

DSU, etc .

TBOS/TL1/CRAFT

ELECTRICAL DS3

DS3 MUX APU

DS3 MUX MPU DLX

Figure 10

Figure 11

If the Soneplex Loop Extender chassis is deployed at the remote location, the selected OSS port is brought into the DSU data port where the signal is formatted for transport utilizing one of the 28 DS1 signals The DS1 is multiplexed into the DS3 and trans-ported to the central location through a fiber optic terminal (FOT) At the central location, the DS3 is demultiplexed and the DS1 carrying the OSS communication is brought to the network element, which recovers the data port

REMOTE LOCATION CENTRAL LOCATION

TBOS/ CRAFT/ TL1

SONEPLEX LOOP EXTENDER CHASSIS

DS1

DSU

FOT FOT

DS1 TO CHANNEL BANK/

DSU, etc .

TBOS/TL1/CRAFT

1

28 DS1s

ADC Kentrox provides the transport equipment package and customer service to fully implement the DSU solution

Advantages

• Utilizes existing network structure to transmit the performance data

• Complete alarm information, performance monitoring, provisioning and trouble shooting capability can be accessed from a remote location

• Additional costing required to support the DSU and required access modules

• A DS1 circuit must be utilized

to transmit the performance data from the Soneplex system

to the central office

Disadvantages

Option 4

Advantages/

Disadvantages