TTMER38: Exercises on the telecommunication test network

Date of the exercise: .....................

Name and Neptun code of the student(s):
..............................................
..............................................

Measurement tasks

Mandatory measurement tasks:

Parts written in italic are the recommendations of the author of the exercise.

  1. Read the description of DEFINITY exchange and BCM50 exchange in the tutorial. Become acquainted the exchanges and the equipments attached to them With the help of the teacher in the laboratory rooms! Fill out the following table based on the explanation of the teacher and the tutorial.
    QuestionDefinityBCM 50
    In what lab room is the exchange located?
    What kind of equipments can be attached to the exchange?
    What is the capacity of the exchange?
    How can we identify a port in the exchange

    Answer the following questions:

  2. Find the data record of the IP telephone on your measuring place in the database of BCM50 exchange! Based on the information in the record answer the following questions:

  3. Check the services assigned to the function buttons and write a short description about the operation of the service denoted by the teacher!

  4. Study the signals of an digital telephone interface with the help of the oscilloscope in the case of 50 us/div and 2 us/div settings. Insert both signal shapes into your report!

    Based on these results answer the following questions:

  5. Based on the signal shapes recorded previously and published in the tutorial study the signal at the line interface of VoIP telephone. Based on these figures and information answer the following questions:

  6. Find the data record of the IP telephone on your measuring place in the database of BCM50 exchange! Based on the information in the record answer the following questions:

  7. Examine the ISDN PRI (PCM) trunk (link) mode in the database of the Definity exchange.

    Based on the content of the data blocks answer the following questions:

  8. Call analysis

    Connect EQS-133D or EQS-133B Analyser to the trunk between the two Definity exchange according to the following figure:

    
    
    
    
    
    
    
    
    
    
    
    

  9. Study of network services, programming of dialing plans, trunks

    Follow the way of a call, which goes out of BCM50 from phones of the measurement place, and arrives to there with the help of configuration managements programs of exchanges (BCM 50, Definity) in the test network! Check and record the value of Tx CPN with the help of BCM 50 Monitor program!