How to simulate one basic call over PRI E1/T1 from the user side

Simulation of an ISDN terminal  is one of the features directly covered by the templates included in the Clarinet Run-Time.

Connecting the unit

The Clarinet Book USB E1/T1 which simulates the User side in front of a Network, uses the B port "From Network". 

The Clarinet-Book can be connected  to the E1 interface in:

The Clarinet-Book can be connected  to the T1 interface in:

Creating the profile for PRI-User simulation

A new profile can be created  with the Wizard from the Template list by selecting:

  • Profile->New->ISDN......See: building
    • ETSI
    • ATT
  • Profile with a description including ISDN, Simu, User, PH=E1 or  T1, SL=Q931
    • ETSI
    • ATT
  • Filter with a description including  SL= Q931, DL=BOP

Example using the wizard:

  • ProfileèNewèISDNèETSIèisdn_etsi_simu_usr_e1.acpèFilter?èisdn_etsi_bop.acf
  • ProfileèNewèISDNèATT-5ESSèisdn_att_simu_usr_t1.acpèFilter?èatt_etsi_bop.acf

Profile resulting from the wizard is ready for monitoring in the D channel with Q931 decoding

  • Modifications to apply to the profile about physical interface:
    • E1 Options: CRC4 multi-frame if CRC4 is used on the interface.
    • T1 Options: ESF/SF multiframing,.....
  • Modifications to apply to the profile about Q931signalling:

    • Changing the dialed number: Generator è Comm1 èEdit è Called Party NumberèCoding

Saving the profile:

  • ProfileèSave asèfilename.acp.

Running the profile

To launch the profile:

  • Select Profile->Run or click over horse_on.gif (968 octets) . It allows to select the name of profile. See Running a test
  • The windows of the Event-Editor is automatically opened.

To stop the profile

  • Click over horse_off.gif (975 octets)  See: Stopping a test
  • The window of the Event-Editor is automatically close

Troubleshooting over PRI

  • No messages displayed on the Event-Editor windows. Check if the Alarms line have an indication  such as ' -+ FL' or '++FL' meaning that no signal is detected. 
  • The protocol messages are displayed on the wrong directions: the E1 or T1 pair connected to the A and B port are the reverse side.
 

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updated:  27-Feb-04