ZTE BTS Card details

Friends, I am working in telecom company. I have worked on both Ericsson and ZTE BTS. Here I am explaining the basic idea of cards working in ZTE BTS.

ZTE BTS Cards

There are many cards in the zte bts. Following cards are installed in a ZTE bts. 

1. PM Card

2. CC Card

3. FS Card

4. BPK Card

5. UBPG Card

6. SA Card

7. FCE Unit

8. RSU Card

 

I am explaining some of them in detail.

PM Card 

As it is clear from the name this card is the Power module which supply power to the BBU (Baseband Unit) panel. PM cards are two in numbers for redundancy.

CC Card

This is Control card of the zte bts. This is the CPU of the system. It contains the software for the complete bts. Whenever the alarm software runs abnormally occurs then you need to upload mo file in this card. It has one ETH0 port which is connected to the media cable of the network. Debug port of this card is used for configuration of the BTS.

FS Card

This card has six optical module. In these optical module SFP of rating 1.25 G or 2.67 G are used for connection with RSU60 or RSU82. This connection is provided by optical patch cord cables. Sometimes these cables are damaged and alarm of RRU Link broken is generated.

BPK Card

This card is Baseband processing card for K band (WCDMA band). When there is problem is WCDMA then you have to change this card.

UBPG Card 

It is abbreviated for Universal Baseband Proceesing unit for GSM band. This card is used for 2G services. Generally this card doesnt have any fault in the long run.

SA Card

This card is used for extending external alarms of the BTS e.g. Mains fail, DG on load, battery low, high temperature, door open, DG battery low. This card also has PCM if you have to run your site on E1 media.

FCE Unit

This is Fan Unit which controls the temperature of the ZTE BTS. There are two fan unit for the bts one for the RSU Card and other for the BBU Panel. 

RSU Card

This are Radio Unit for different bands. RSU82 is used for 900 MHz band while RSU 60 is used for C sector. These cards are connected to the FS card via optical patch cords. The output of these cards are connected to the feeder cables of the antenna ports. 

If you need furthur details on the topic, feel free to contact me. 

Thanks for reading!

Ericsson minilink configuration

How to configure Ericsson minilink 

Hello friends, this tutorial is for those who are working with ericsson minilink. In this guide i am going to tell you how to configure ericsson minilink and how to troubleshoot minilink alarms.

To configure ericsson minilink all you guys need is a software named Ericsson minilink manager.

Steps for Ericsson minilink configuration 

1. Open the Ericsson minilink manager.

2. It will ask for password to enter the configuration, password is 1111 (four times one).

3. Connect your com port cable to O&M port of the MMU/SMU unit.

Ericsson Minilink Configuration

4. Click on Network> Scan local

5. The default view of the minilink screen will come.

6. Right click on the id like XYZ3, here you will have 3 options. First one is traffic configuration.

7. Click on traffic configuration and select the E1 you need to open. You can check how many as you needed.

8. Now the second option is Hop Setup. In this window you have to configure ODU Frequency, ODU transmit power. Transmit power of the ODU must not be selected more than 15 dB.

9. Third one is Hardware setup. In this you need to select your hardware whether you are using 1 MMU or 2 SMU and like that. 

Now your configuration is complete.

Check Rx level if it is below -50 dbm then it is ok. Your traffic will run otherwise align the anteena as per Rx level of the ODU. There will be a cross mark in the picture where alarm exist. BER(Bit error rate) should also be less than 10e-6.

Now you have an idea of Ericsson minilink configuration.

 

Thats all for now. 

If you have queries ask your query in the comment box. 

ZTE BTS Alarms

ZTE BTS Alarms

Guys if you are working in telecom you need to know various alarms related to ZTE BTS. I have worked in zte bts for two years in O&M field. To view zte bts alarms you have to login to the bts first. 

How to login ZTE BTS

To login zte bts you should have zte sdr software. You have to open EOMS module of this software. This software works on java platform. Your laptop must have latest version of java installed for this purpose. 

Connect your lan cable to debug port of CC Card of the zte bts. Now enter following ip into your network setting.

Ip Address     192.254.1.17

Subnet mask 255.255.255.0

Gateway          192.254.1.16

Now open zte bts software EOMS module. For first time users you need to add station ip address that is again 192.254.1.16. After this input username, you may enter anything in this field. Select online configuration tab and click on Connect button. 

In the default view you will have zte bts diagram. In this view you will see red or yellow colour on the card that have alarm. When you click on the card you will see corresponding alarm. You can also view all the alarms at a single screen. 

Basic troubleshooting zte bts alarms are as follows:

1. Sctp link alarm

This alarm is reported when there is problem or error in the media. Media might be both minilink or optical media.

2. physical ethernet link is broken

This alarm means break in the media cable between ETH0 PORT of CC Card of zte bts and ethernet port of the media.

3. RRU Link is broken

this alarm reports when the fiber patch cord between RSU Unit and FS Card is damaged.
4. Optical module Unavailable
If this alarm occurs with RRU Link broken, then you need to change the SFP into the FS Card.

If you need explanation of other zte bts alarms, name your alarm in the comment section. 

Hope you guys got what you need.

Thanks for reading!