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TS 29.199-10 (CT)
Open Service Access (OSA)
Parlay X web services
Part 10: Call Handling

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V9.0.0 (PDF)    2009/12    22 p.
V8.1.0    2009/10    22 p.
V7.0.2    2007/06    22 p.
V6.5.0    2007/06    20 p.

Rapporteur:  Mr. Unmehopa, Musa
See also:  –

The Call Handling Web Service provides a mechanism for an application to specify how calls are to be handled for a specific number. Call handling includes commonly utilized actions:
  • Call accepting - only accepting calls from a list of numbers.
  • Call blocking - blocking calls if they are on a blocking list.
  • Conditional call forwarding - changing the destination of a call to another number for a specific calling number.
  • Unconditional call forwarding - changing the destination of a call to another number.
  • Play audio - initiate audio with the caller (e.g. an announcement or menu).
The set of rules are provided to the Web Service which is responsible for establishing the call handling function. Only one action is taken for a call, and once this action is started the rules will stop being processed.

There is a specific order in which these rules are processed, providing a predictable call handling expectation for rules provided. The processing is done as follows.
  • Call accepting determines if the call is accepted or rejected. If the caller is not on the accept list, the call is rejected and rule processing ends.
  • Call blocking determines if the call is rejected. If the caller is on the block list, the call is rejected and rule processing ends.
  • Conditional call forwarding - each calling number that has a specific forwarding instruction is checked, and the call is forwarded on a match, and rule processing ends.
  • Unconditional call forwarding - the called number is changed to the call forwarding number and rule processing ends.
  • Play audio - the call is handled by a voice system, which handles all further processing of the call. Rule processing ends when the call is handed off.
  • Continue processing call, to complete call to the original called number.
If no rules are specified in a particular area, then that step is skipped. If the rule processing ends without any action being indicated, then the call will continue to the called number.

Call Handling provides its function without further interaction with the Application. This is in contrast to the Call Notification interfaces which provide notifications to the Application for processing.

This TS specifies the Call Handling Web Service aspects of the interface.


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1   Scope   PDF-p. 6
2   References
3   Definitions and abbreviations
4   Detailed service description
5   Namespaces   PDF-p. 8
6   Sequence diagrams   PDF-p. 9
7   XML Schema data type definition   PDF-p. 10
8   Web Service interface definition   PDF-p. 12
9   Fault definitions   PDF-p. 16
10   Service policies
A  (Normative)   WSDL for Call handling   PDF-p. 17
B   Description of Parlay X Web Services Part 10: Call handling for 3GPP2 cdma2000 networks   PDF-p. 18
C   Change history   PDF-p. 20

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