Commissioning Optical Power of OTU Board

The overload of the APD receiver laser is -9 dBm. If the input optical power is higher, the APD laser may be damaged. Therefore, it is recommended that you insert the fiber loosely from the input optical port of the OTU during commissioning. After commissioning, make sure the input optical power is lower than the receiver overload before you insert the fiber.

Forcing the OTU Board to Emit Light

This section describes how to force the OTU board to emit light.

Prerequisites

The NE must be created on the U2000.

Tools, Equipment, and Materials

U2000

Background Information

The signals accessed on the client side or the WDM side should be service signals in actual transmission, or the optical signals generated by forcing the board to emit light.

The WDM side of the OTU board by default is forced to emit light. If it does not emit light, refer to the following procedure to query whether the board is forced to emit light. If the board is not forced to emit light, set the board to emit light.

Precautions

• The prerequisite for commissioning the ESC (Electric Supervisory Channel) is that the OTU is forced to emit light.

Procedure

1. In the NE Explorer window, select the desired OTU and choose Configuration > WDM Interface from the Function Tree.
2. Select Channel from the drop-down list.
3. Optional: Click the Basic Attributes tab. Set the Automatic Laser Shutdown of the optical port on the WDM side of the OTU to DISABLE.
   Only the LWX2, LWXD and LWXS can set Automatic Laser Shutdown of the WDM side.
4. Set the Laser Status of the optical port on the WDM side of the OTU to OPEN.
5. Click Apply.

Adjusting the Input Optical Power of OTU Board

ools, Equipment, and Materials

Optical power meter

Precautions

Before the equipment is powered on, verify that the fixed optical attenuator is configured according to the configuration rules. Verify the input optical power of the OTU (including the WDM side and client side) is lower than the receiver overload to avoid damage to the optical module during commissioning. Note that the overload of the APD receiver laser is only -9 dBm. Adjust the input optical power at the IN port on the WDM side of the OTU to ensure that the input optical power is within the optimal range: from -14 dBm to -25 dBm.For the specifications about the sensitivity and overload point of the OTU board.

Commissioning Requirements

• Adjust the input optical power at the IN port on the WDM side of the OTU to ensure that the input optical power is within the optimal range: from -12 dBm to -5 dBm; adjust the input optical power at the RXn port on the client side of the OTU to ensure that the input optical power is within the optimal range: from (sensitivity +3) dBm to (overload point -2) dBm.
• Confirm the optical preamplifier on the WDM side of the OTU at the receive end has output the standard optical power of single wavelength. When this occurs, the input optical power on the WDM side can be adjusted based on the actual optical power by adding, changing or removing the fixed optical attenuators.
• After commissioning, insert a fiber into the input optical port on the OTU when the input optical power reaches a normal state.

Huawei S6720-32C-PWH-SI switch

Huawei S6720-SI series switches are Huawei-developed next-generation multigigabit 10GE fixed switches. S6720-SI can provide high-speed wireless access, and access for 10GE servers in data centers or function as access/aggregation switches on a campus network. S6720-SI provides a wide variety of services, comprehensive security policies, and various QoS features to help customers build scalable, manageable, reliable, and secure campus and data center networks.

• Huawei S6720-32C-PWH-SI Switch
• 24×100M/1G/2.5G/5G/10G Base-T Ethernet ports, 4×10GE SFP+
• Double pluggable power supplies, AC/DC power supply
• Long distance PoE++
• USB
• Software: Standard Version
• 32K MAC address entries

New user cannot be created on U2000 due to a version bug

Issue Description

When customer was creating a new U2000 user, he got the error message:
Failed to connect to the server. The reason may be:
1. The client cannot find the server. Please check the server configuration.
2. The server status is abnormal. Please ensure that all the services work normally
U2000 version is V100R002C00SPC001

Alarm Information

N/A

Handling Process

1. First check in the System Monitor all processes are running normally.
2. When you create a user, in the Advanced attributes, modify the period limit according the attached picture. Sometimes you can create the new user by doing this. In case you get  "Invalid login time period. Please reset again" or "Invalid login duration" error message go to next step.
3. This problem is solved in patch CP0102. But it is suggested setup patch CP1105 directly which can relosve more issues.

Root Cause

This is a bug in the current software version.

The most popular Huawei S2700EI switch as below:

LS-S2700-9TP-SI-AC

LS-S2700-9TP-PWR-EI

LS-S2700-18TP-SI-AC

LS-S6720-30C-EI-24S-AC

Contact information:

Telephone: 852-30623083

Email: Sales@Thunder-Link.com

           Supports@Thunder-link.com            

Website: http://www.thunder-link.com

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MA5600T Series Networking Protection Feature
MA5600T Series Maintenance Feature Glance
MA5600T&MA5603T&MA5608T 10G GPON Feature Glance
How to Configure the H.248-based Voice Service?
How to Login Huawei Equipment Through the Local Serial Port

How Is the VoIP Service Implemented on Huawei MA5600T by Setting the electronic Switch?

Huawei MA5600T supports the VoIP service only when the electronic switch is already switched to the VoIP daughter board. By default, Huawei MA5600T does not support the VoIP service.

Since V800R005, the VoIP service has been supported.

The MA5600T provides the following two electronic switches:

• Electronic switch 0: Used for determining whether the port on the control board or the port on the upstream interface board of the MA5600T is used for upstream transmission.
  • If the electronic switch is on location-0, it indicates that the control board is used for upstream transmission.
  • If the electronic switch is on location-1, it indicates that the upstream interface board is used for upstream transmission.
  • By default, electronic switch 0 is on location-0.
• Electronic switch 1: Used for determining whether Huawei OLT supports the VoIP service or supports upstream transmission through port 0/20/3.
  • If the electronic switch is on location-0, it indicates that the electronic switch is switched to the VoIP daughter board and thus supporting the VoIP service.
  • If the electronic switch is on location-1, it indicates that the electronic switch is switched to port 0/20/3. Then, port 0/20/3 serves as the upstream port.
  • By default, electronic switch 1 is on location-1, indicating that the VoIP service is not supported.

• The SCUL OLT main control board does not support the VoIP service and does not provide the upstream port; thus, services are upstream transmitted by only the upstream interface board.
• The SCUL control board does not support the electronic switch

What are the Functions and Features of Huawei 40G Line Board NS3

Huawei NS3 board achieves cross-connection at the electrical layer, and to provide OTN interfaces and ESC. The TN56NS3 board supports hybrid transmission of OTN and SDH services.

The available functional versions of the NS3 board are TN11, TN52, TN54, TN55, and TN56.

• Only the OptiX OSN 8800 supports ODU0/ODU3.
• The relay mode is only supported by the TN54NS3/TN55NS3/TN56NS3.
• For the TN54NS3 board:
  • When the board is equipped with 40 Gbit/s-multirate-2km optical modules, it does not support OTU3e on the WDM side and ODU2e on the backplane side.
  • When the board is equipped with 800ps/nm-C band-tunable-ODB-PIN or 800ps/nm-C band-tunable-DQPSK-PIN optical modules, the preceding restriction does not apply.
• Only the TN56NS3 board supports SDH functions and features, including SDH overhead, physical clock (OCS), Electrical-layer ASON (SDH), SDH protection, and VC-4 channel loopback.

Basic functions and Features

• 40G Line Service Processing Board(AFEC DQPSK,Tunable), 50GHz(Rx1_PIN,Tx1_-5dBm~0dBm,LC)
• TN54NS3 board achieves cross-connection at the electrical layer and to provide OTN interfaces and ESC.
• The NS3 board can work in either line mode or relay mode.
• Supports the OTU3/OTU3e interface on the WDM side.
• Supports the OTN frame format and overhead processing by referring to the ITU-T G.709.
• OTU3 layer:supports the SM function.
• ODUk(k=0, 1, 2, 3, flex) layer supports the PMand TCM function, and PM and TCM non-intrusive monitoring functions.
• 80 wavelengths tunable in the C band with 50 GHz channel spacing
• Supports ESC functiona
• Supports the PRBS function on the WDM side.
• Supports ITU-T G.709-compliant forward error correction (FEC) on the WDM side.
• Supports ITU-T G.975.1-compliant AFEC-2 on the WDM side.
• The WDM-side signals of the TN54NS3 board can be regenerated using another TN54NS3 board.
• Supports IEEE 1588V2 at BC and OC mode, do not support TC and TC+OC mode.
• Supports Optical-layer ASON and Electrical-layer ASON (OTN)
• OTN protection
• Supports ODUk SNCP.
• Supports intra-board 1+1 protection (when working with the OLP/DCP/QCP board).
• Supports ODUk SPRing protection.
• Supports tributary SNCP protection.
• Supports OWSP protection.
• Supports SDH protection, SNCP, SNCTP, LMSP, MSP ring
• Supported Loopback at WDM side and ODU0/ODU1/ODU2 Channel Loopback