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OSN 500 550 580 V100R008C50 Commissioning and Configuration Guide 02

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Parameters for Configuring SDH Services

Parameters for Configuring SDH Services

This topic describes the parameters that are used for configuring SDH services, including parameters for configuring PDH boards, SDH boards, and protection such as MSP and SNCP.

Parameters for Configuring PDH Boards

This topic describes the parameters that are used for configuring PDH boards, including parameters for configuring PDH ports and VC-12 path overheads.

Parameters for Configuring PDH Interfaces

This section describes the parameters for PDH interfaces.

Table 2-2  Parameters for PDH interfaces

Field

Value Range

Description

Port

NE name-slot number-board name-port number(port name)

For example: NE(9-1001)-3-SP3D-1(SDH_TU-1)

This parameter indicates the corresponding port.
Port Name For example: SDH_TU-1 This parameter indicates or specifies the name of the port.
Tributary Loopback

Non-Loopback, Inloop, Outloop

Default value: Non-Loopback

This parameter indicates or specifies the loopback status in the associated path of the tributary unit.

  • Non-Loopback indicates that the loopback is canceled or not performed.
  • Inloop indicates that the PDH signals transmitted to the opposite end are looped back.
  • Outloop indicates that the received PDH signals are looped back.

This function is used for fault locating for the paths of the tributary unit. The Tributary Loopback function is used for diagnosis and may affect the services that are transmitted over the interfaces. Hence, exercise precaution before starting this function.

In normal cases, this parameter is set to Non-Loopback.

Port Impedance

75 ohm, 120 ohm, 100 ohm

This parameter indicates the impedance of a path, which depends on the tributary unit.
Service Load Indication

Load, Non-Loaded

Default value: Load

This parameter indicates or specifies the service loading status in a specific path.

  • When this parameter is set to Load, the board detects whether alarms exist in the path.
  • When this parameter is set to Non-Loaded, the board does not detect whether there are alarms in the path.

If a path does not carry any services, you can set this parameter to Non-Loaded for the path to mask all the alarms. If a path carries services, you need to set this parameter to Load for the path.

Retiming Mode

Normal, Retiming Mode of Tributary Clock, Retiming Mode of Cross-Connect Clock

Default value: Normal

This parameter indicates or specifies the retiming mode of a specific path.

By using the retiming function, the retiming reference signal from the SDH network and the service data signal are combined and then sent to the client equipment, therefore decreasing the output jitter in the signal. In this way, the retiming function ensures that the service code flow can normally transfer the retiming reference signal.

Only E1 ports support retiming.

  • When this parameter is set to Normal, the retiming function is not used.
  • When this parameter is set to Retiming Mode of Tributary Clock, the retiming function is used with the clock of the upstream tributary unit traced.
  • When this parameter is set to Retiming Mode of Cross-Connect Clock, the retiming function is used with the clock of the cross-connect unit traced.

It is recommended that the external clock, instead of the retiming function, should be used to provide reference clock signals for the equipment.

If the retiming function is required, it is recommended that you set this parameter to Retiming Mode of Cross-Connect Clock.

Port Service Type

E1, T1, E3, T3

Default value: E1

This parameter indicates the type of services that are processed in a path. It depends on the services that are transmitted in a path.

Pattern

B8ZS, AMI

This parameter indicates the code pattern on the channel of a tributary board.

Association with other parameters:

This parameter needs to be set when Port Service Type is set to T1.

  • If all channels of a board are configured with E1 services, retain the default value HDB3 for Pattern.
  • If all channels of a board are configured with T1 services, set Pattern to B8ZS or AMI for different ports.
  • If a board is configured with both E1 and T1 services, set Pattern to HDB3 for the E1 services and set Pattern to B8ZS for the T1 services.
Input Signal Equalization

Unequalized, Equalized

Default value: Unequalized

This parameter indicates whether the output signals are equalized.

This parameter is valid only when Port Service Type is set to T3.

If the trunk cable exceeds 70 m, it is recommended that you set this parameter to Equalized. Otherwise, adopt the default value.

Output Signal Equalization

Unequalized, Equalized

Default value: Unequalized

This parameter indicates whether the output signals are equalized.

This parameter is valid only when Port Service Type is set to T3.

If the trunk cable exceeds 70 m, it is recommended that you set this parameter to Equalized. Otherwise, adopt the default value.

Parameters for Configuring VC-12 Path Overheads

This topic describes the parameters for configuring VC-12 path overheads.

Table 2-3  Parameters for configuring the J2 byte
Parameter Value Range Description
Object

NE name-slot number-board name-port number(port name)

Displays the name of the operation object.

J2 to be Sent

16 bytes

For example, [16 bytes] HuaWei SBS

Specifies the VC-12 path overhead byte J2 to be transmitted.

J2 to be Received

16 bytes

For example, [16 bytes] HuaWei SBS

Specifies the VC-12 path overhead byte J2 to be received.

J2 Received

16 bytes

For example, [16 bytes]

Displays the received VC-12 path overhead byte J2.

Table 2-4  Parameters for configuring the V5 byte
Parameter Value Range Description
Object

NE name-slot number-board name-port number(port name)

Displays the name of an operated object.

Signal Label(L1, L2, L3 of V5) to be Sent

Unequipped or Supervisory-unequipped, Equipped-Non-Specific Payload, Asynchronous, Bit Synchronous, Byte Synchronous, Retained Signal Flag, O.181 Signal, VC-AIS, Other Mapping (For Test), ATM Mapping, HDLC/PPP Mapping, HDLC/LAPS Mapping, Virtual Connection Test Signal (0.181 Special Mapping), GFP Mapping

Default value: Asynchronous

Specifies the V5 byte to be transmitted. The V5 byte is used for bit error monitoring, signal labeling, and VC-12 path status indication.

When used for signal labeling, the V5 byte can be displayed in text format or hexadecimal format. The value of this parameter is displayed in text format. The mapping between the text format and the hexadecimal format is as follows:

  • 0x00: Unequipped or Supervisory-unequipped
  • 0x01: Equipped-Non-Specific Payload
  • 0x02: Asynchronous
  • 0x03: Bit Synchronous
  • 0x04: Byte Synchronous
  • 0x05: Retained Signal Flag
  • 0x06: O.181 Signal
  • 0x07: VC-AIS
  • 0x08: Other Mapping (For Test)
  • 0x09: ATM Mapping
  • 0x0A: HDLC/PPP Mapping
  • 0x0B: HDLC/LAPS Mapping
  • 0x0C: Virtual Connection Test Signal (0.181 Special Mapping)
  • 0x0D: GFP Mapping
Signal Label(L1, L2, L3 of V5) to be Received

Unequipped or Supervisory-unequipped, Equipped-Non-Specific Payload, Asynchronous, Bit Synchronous, Byte Synchronous, Retained Signal Flag, O.181 Signal, VC-AIS, Other Mapping (For Test), ATM Mapping, HDLC/PPP Mapping, HDLC/LAPS Mapping, Virtual Connection Test Signal (0.181 Special Mapping), GFP Mapping

Default value: Asynchronous

Specifies the V5 byte to be received.

Signal Label(L1, L2, L3 of V5) Received

Unequipped or Supervisory-unequipped, Equipped-Non-Specific Payload, Asynchronous, Bit Synchronous, Byte Synchronous, Retained Signal Flag, O.181 Signal, VC-AIS, Other Mapping (For Test), ATM Mapping, HDLC/PPP Mapping, HDLC/LAPS Mapping, Virtual Connection Test Signal (0.181 Special Mapping), GFP Mapping

Default value: -

Queries the received V5 byte.

Parameters for Configuring SDH Boards

This section describes the parameters for SDH boards.

Table 2-5  Parameters for SDH interfaces

Field

Value Range

Description

Port For example: NE(9-1001)-3-SL4D-1(SDH-1) This parameter indicates the corresponding SDH interface.
Optical Interface Name For example: SDH-1 This parameter indicates or specifies the name of the optical interface.
Laser Switch

Open, Close

Default value: Open

This parameter indicates or specifies the on/off state of the laser.

This parameter is set for SDH optical interfaces only. In normal cases, this parameter is set to Open.

Optical(Electrical) Interface Loopback

Non-Loopback, Inloop, Outloop

Default value: Non-Loopback

This parameter indicates or specifies the loopback status on the SDH interface.

  • Non-Loopback indicates that the loopback is canceled or not performed.
  • Inloop indicates that the SDH signals transmitted to the opposite end are looped back.
  • Outloop indicates that the received SDH signals are looped back.

This function is used for fault locating for the SDH interfaces. The Optical(Electrical) Interface Loopback function is used for diagnosis and may affect the services that are transmitted over the interfaces. Hence, exercise precaution before starting this function.

In normal cases, this parameter is set to Non-Loopback.

VC4 Path

For example: NE(9-1001)-3-SL4D-1(SDH-1)-VC4:1

This parameter indicates the corresponding VC-4 path.
VC4 Loopback

Non-Loopback, Inloop, Outloop

Default value: Non-Loopback

This parameter indicates or specifies the loopback status in the VC-4 path.

  • Non-Loopback indicates that the loopback is canceled or not performed.
  • Inloop indicates that the VC-4 signals transmitted to the opposite end are looped back.
  • Outloop indicates that the received VC-4 signals are looped back.

This function is used for fault locating for the VC-4 paths. The VC4 Loopback function is used for diagnosis and may affect the services that are transmitted over the interfaces. Hence, exercise precaution before starting this function.

In normal cases, this parameter is set to Non-Loopback.

Table 2-6  Parameters for automatic laser shutdown

Field

Value Range

Description

Optical Interface For example: NE(9-1001)-3-SL4D-1(SDH-1) This parameter indicates the corresponding optical interface.
Automatic Shutdown

Disabled, Enabled

Default value: Disabled

This parameter indicates or specifies whether the Automatic Shutdownfunction is enabled or disabled for the laser.

The ALS function allows the laser to shut down automatically when an optical port does not carry services, an optical fiber is broken, or no optical signal is received.

You can set On Period(ms), Off Period(ms), and Continuously On-test Period(ms) only when this parameter is set to Enabled.

On Period(ms)

For example, 2000

This parameter indicates or specifies the period when a shutdown laser automatically starts up and tests whether the optical fiber is normal.
Off Period(ms)

For example, 60000

This parameter indicates or specifies the period when the laser does not work (with the ALS function being enabled).
Continuously On-test Period(ms)

For example, 90000

This parameter indicates or specifies the period when a shutdown laser is manually started up and tests whether the optical fiber is normal.

SNCP Configuration Parameters

This section describes parameters that must be set to configure subnetwork connection protection (SNCP) on an NE.

Table 2-7 lists parameters that must be set to configure SNCP.

Table 2-7  Parameters to configure SNCP

Parameter

Value

Description

Service Type

SNCP

Specifies the service type.

Direction Bidirectional, Unidirectional

Specifies the service direction.

The service transmitted and received on the same route is a bidirectional service. The service transmitted and received on different routes is a unidirectional service.

Level

VC12, VC3, VC4, VC4-4C, VC4-16C, VC4-64C

Specifies the level of the new service.

Hold-off Time (100 ms)

0 to 100

Default: 0

Specifies the hold-off time.

The hold-off time refers to the duration from the time the system detects a switching condition to the time the system triggers a switchover. If Hold-Off Time (100 ms) is set to 0, there is no hold-off time.

Revertive Mode

Non-Revertive, Revertive

Default: Non-revertive

Specifies whether to switch services from the protection channel back to the working channel after the working channel recovers. If this parameter is set to Revertive, services will be switched from the protection channel back to the working channel. If this parameter is set to Non-Revertive, services will not be switched from the protection channel to the working channel.

WTR Time (s)

Example: 600

Specifies the wait-to-restore (WTR) time.

After a working channel recovers, a revertive switchover occurs after the WTR time has elapsed. This parameter is available only when Revertive Mode is set to Revertive.

Source Board

Example: 1-SL4D-1(SDH-1)

Displays the slot number, board name, port number, and port name at the source end.

Sink Board

Example: 3-SP3D

Displays the slot number, board name, port number, and port name at the sink end.

Source VC4

Example: VC4-1

Specifies the VC-4 timeslot at the source end.

One VC-4 timeslot can contain a maximum of 63 VC-12 timeslots.

Sink VC4

-

Specifies the VC-4 timeslot at the sink end.

Source Timeslot Range(eg.1, 3-6)

Example: 1-5

Specifies the timeslot range at the source end.

Sink Timeslot Range(eg.1, 3-6)

Example: 1-5

Specifies the timeslot range at the sink end.

Parameters for Configuring Multiplex Section Protection

This section describes parameters that must be set to configure multiplex section protection (MSP).

Table 2-8 lists parameters to configure MSP.

Table 2-8  Parameters to configure MSP

Parameter

Values

Description

Name

For example, two-fiber bidirectional multiplex section shared protection ring_1

Indicates the name of a protection subnet. A name will be automatically generated for each new protection subnet. You can change the name.

Level

STM-1, STM-4, STM-16, STM-64, and STM-256 when Assigned by VC4 is deselected

STM-2, STM-4, STM-6, ..., STM-254, and STM-256 when Assigned by VC4 is selected

NOTE:
  • The OptiX OSN equipment supports only STM-1, STM-4, and STM-16 levels.

Indicates the capacity level of a protection subnet. The capacity level of a protection subnet must be the same as the transmission rate of the line boards that form the protection subnet.

NOTICE:

Attempts to create protection subnets with incorrect capacity levels will fail.

Resource Sharing

-

Indicates that one physical resource can be shared by two protection subnets. If multiple protection subnets are created over a fiber, resource sharing must be enabled before configuring the second protection subnet.

NOTE:

The OptiX OSN equipment does not support this parameter.

Assigned by VC4

Selected, Deselected

Indicates that different VC-4s on an optical fiber are assigned to different protection subnets. That is, you can group VC-4s in one optical fiber into different protection subnets, thereby allowing only selected channels on a fiber to form an MSP group.

Node

For example, NE70

Displays the selected NE.

Link

For example, NE140-NE141 Ring 1

Displays fiber link of a protection subnet.

Physical Information

For example, 1-SL1Q-1(SDH-1)-1-SL1Q-2(SDH-1)

Displays the line board resource used by a fiber link.

VC4

For example, 1 to 4

This parameter is available only when Assigned by VC4 is selected.

Subnet Name For example, two-fiber bidirectional multiplex section shared protection ring_1 Displays the name of a protection subnet.
Subnet Type 2f_MS SPRing, 2f_MS DPRing, 1+1 Linear MSP, M:N Linear MSP, Unprotected Ring, Unprotected Chain Displays the type of a protection subnet.
WTR Time (s) For example, 600 Displays the switching wait-to-restore (WTR) time of a protection subnet.
Revertive Mode Non-Revertive, Revertive Displays the reversion mode of a protection subnet.
Switching Mode

Single-Ended Switching, Dual-Ended Switching

Default: Single-Ended Switching

Specifies the switching mode.

Configuration Guidelines

For 1+1 MSP, you can set this parameter to Single-Ended Switching or Dual-Ended Switching. For 1:N MSP (N≤4), you can set this parameter to only Dual-Ended Switching.

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Updated: 2019-01-21

Document ID: EDOC1100020976

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