Events: Vseries (V24, V35, V36, X24)

Event Structure What is V24 physical event ?...

PH decoding by using Clarinet Event-Editor with a filter ...

Protocol stack Which protocol specifications to be defined in the current filter ?...

Standards
  • ITU Recommendation V24
  • ITU Recommendation X24
 

Options Changing the display conditions in the current filter ?...

V24 decoding

ph_v24_decod.gif (7873 octets)

Event information Date Date of the event in the format: hh:mm:ss/xxx.y  
N The interface number which identifies the Clarinet-interface connected to the host.

Protocol fields State <circuit 1> <circuit 2> ... <circuit n>
<state>

The "-+" or "+-" mark indicates the circuit which undergoes a state transition.

PH-V24 Protocol fields

<circuit i> Circuit state evolution in the following format: xydesignation
  xy
.. non-monitored circuit
++ ON state stable (no transition)
-- OFF state stable (no transition)
+- transition from the ON state to the OFF state
-+ transition from the OFF state to the ON state
  designation
V24 use X24 use
RTS 105 RTS display for C
CTS 106  
DSR 107  
DTR 108  
DCD 109 DCD display for I
RI 125  
RL 140  
LL 141  
TM 142  
SPARE 112  
<state> Additional emulation indication to display the new interface state following the last transition of a circuit state before reaching the related combination of the states of the circuits according to the circuits / states definition.

Protocol stack applied

x25pac_vs_stack.gif (7364 octets)

Native V24 (and X24) physical event

The V24 (and X24) physical events are generated by the analysis process on the PH link when the physical interface type is based on V24 (and X24):

  • Every transition of state of the physical interface (circuits) generates an event.
  • An additional PH emulation event is generated when the combination of incoming and outgoing circuits in ON or OFF state matches reference combinations (relating command, data states) defined in the profile in use.

The binary event structure is defined in the Clarinet-API.

The edition of the V24 (and X24) physical events without any decoding/formatting allows to display the successive states of the physical interface.

 


home     Quick start     Specifications     Connections     Features     How to?     Notes     Search     Site Map

updated:  27-Feb-04