económico
5.1 Determinación de las fuentes de financiamiento
Where call charges only relate to the call answer time then the Call Event Start Timestamp will normally be populated with the call answer time and not the channel seizure time.
Due to certain technical constraints this may not always be possible or cost effective to implement so, to support these exceptional cases, TAP has been configured to allow for the population of Call Event Start Timestamp with channel seizure time even where this does not relate to the start of charging. It should be noted that this usage could lead to some TADIG testing completion difficulties with a few potential roaming partners where they may not be able to accommodate this exception in TAP files received.
Where a call has any charges relating to the channel seizure time then the Call Event Start Timestamp must contain the channel seizure time. This is true even where there are other charges within the call that relate to the call answer time, for example where a call set up charge is made for channel seizure and then duration is charged from call answer.
The Total Call Event Duration must always contain the call duration calculated from the call end time (channel release) minus the Call Event Start Timestamp.
For the same call scenario it is the charging model (IOT) that will determine which values are valid for which data items.
Example A:
VPMN X charges for duration from call answer to the end of the call. There is no other charge for the call. The duration is chargeable at 2 SDR per minute, unitised per 30 seconds.
Channel Seizure Timestamp 20090517152130 Call Answer Timestamp 20090517152141 Call End Timestamp 20090517152703
The following table shows the contents of the relevant TAP elements:
TAP Element Value Comments
Call Event Start Timestamp 20090517152141
Total Call Event Duration 322 seconds Calculated from Call End Timestamp minus Call Event Start Timestamp
Basic Service Used Group
TAP Element Value Comments Charging Timestamp Not present
Charge Information Group; only 1 occurrence
Charged Item D
Charge Detail Group; only 1 occurrence
Charge Type 00
Charge 11 SDRs
Chargeable Units 322
Charged Units 330 This item is optional and is provided at the discretion of the Sender.
Charge Detail Timestamp Not present
Table 42Example A: Relevant TAP elements (Duration charged from call answer to end of call)
Example B:
VPMN X charges for duration from call answer to the end of the call. There is no other charge for the call. The duration is chargeable at 2 SDR per minute, unitised per 30 seconds.
Channel Seizure Timestamp 20090517152130 Call Answer Timestamp 20090517152141 Call End Timestamp 20090517152703
VPMN X implementation uses the exceptional case (see above)
The following table shows the contents of the relevant TAP elements
TAP Element Value Comments
Call Event Start Timestamp 20090517152130
Total Call Event Duration 333 seconds Calculated from Call End Timestamp minus Call Event Start Timestamp
Basic Service Used Group
Charging Timestamp 20090517152141
Charge Information Group; only 1 occurrence
Charged Item D
Charge Detail Group; only 1 occurrence
Charge Type 00
Charge 11 SDRs
Chargeable Units 322
Charged Units 330 This item is optional and is provided at the discretion of the Sender.
Charge Detail Timestamp Not present
Table 43Example B: Relevant TAP elements (Duration charged from call answer to end of call)
Example C:
VPMN X charges for duration from channel seizure to the end of the call. There is no other charge for the call. The duration is chargeable at 2 SDR per minute, unitised per 30 seconds.
Channel Seizure Timestamp 20090517152130 Call Answer Timestamp 20090517152141 Call End Timestamp 20090517152703
The following table shows the contents of the relevant TAP elements:
TAP Element Value Comments
Call Event Start Timestamp 20090517152130
Total Call Event Duration 333 seconds Calculated from Call End Timestamp minus Call Event Start Timestamp
Basic Service Used Group
Charging Timestamp Not present
Charge Information Group; only 1 occurrence
Charged Item D
Charge Detail Group; only 1 occurrence
Charge Type 00
Charge 12 SDRs
Chargeable Units 333
Charged Units 360 This item is optional and is provided at the discretion of the Sender.
Charge Detail Timestamp Not present
Table 44Example C: Relevant TAP elements (Duration charged from channel seizure to end of call)
Example D:
VPMN X charges a fixed charge for call set up and duration from call answer to the end of the call. The call set up is charged at 0.50 SDR, fixed charge. The duration is chargeable at 2 SDR per minute, unitised per 30 seconds.
Channel Seizure Timestamp 20090517152130 Call Answer Timestamp 20090517152141 Call End Timestamp 20090517152703
The following table shows the contents of the relevant TAP elements:
TAP Element Value Comments
Call Event Start Timestamp 20090517152130
Total Call Event Duration 333 seconds Calculated from Call End Timestamp minus Call Event Start Timestamp
Basic Service Used Group
TAP Element Value Comments Charging Timestamp Not present
Charge Information Group; 1st occurrence
Charged Item F
Charge Detail Group; only 1 occurrence
Charge Type 00
Charge 0.50 SDRs
Chargeable Units Not present Charged Units Not present Charge Detail Timestamp Not present
Charge Information Group; 2nd occurrence
Charged Item D
Charge Detail Group; only 1 occurrence
Charge Type 00
Charge 11 SDRs
Chargeable Units 322
Charged Units 330 This item is optional and is provided at the discretion of the Sender.
Charge Detail Timestamp 20090517152141
Table 45Example D: Relevant TAP elements (Fixed charge for call set up and duration charged from call answer to the end of the call)
Example E:
VPMN X charges a fixed charge for call set up attempt when the call is not answered. The call set up attempt is charged at 0.25 SDR, fixed charge.
Channel Seizure Timestamp 20090517152130
Call Answer Timestamp not applicable, call not answered
Call End Timestamp 20090517152204 where Call End Timestamp is the channel release time
The following table shows the contents of the relevant TAP elements:
TAP Element Value Comments
Call Event Start Timestamp 20090517152130
Total Call Event Duration 34 seconds Calculated from Call End Timestamp minus Call Event Start Timestamp
Basic Service Used Group
Charging Timestamp Not present
Charge Information Group; only 1 occurrence
Charged Item A
Charge Detail Group; only 1 occurrence
Charge Type 00
TAP Element Value Comments
Charge 0.25 SDRs
Chargeable Units Not present Charged Units Not present Charge Detail Timestamp Not present
Table 46Example E: Relevant TAP elements (Fixed charge for call set up when call not answered)