Initiation of Hold and Retrieve (BRI and PRI DPNSS/Q.SIG Protocols Only)

• Hold and retrieve - local initiated
• Hold and retrieve - remote initiated

Hold and retrieve - local initiated

Step	Dialogic API	Action/Result	Dialogic Event
1	---	CALL CONNECTED	---
	cc_HoldCall( )	-->
	---	CALL HELD	---
2		<--	CCEV_HOLDACK
3	Unroute SCbus time slot for held call
		:
		-->
4	cc_RetrieveCall( )
5		<--	CCEV_RETRIEVEACK
6	Reroute SCbus time slot for retrieved call
7	---	CALL NOT HELD	---
		<--	CCEV_HOLDREJ
8	Take no action

1. Place a connected call on hold (cc_HoldCall( )).
2. When call is held, application will receive hold acknowledge (CCEV_HOLDACK) event.
3. Application should unroute SCbus time slot for held call.
4. Retrieve a held call (cc_RetrieveCall( )).
5. When call is retrieved, application will receive retrieve acknowledge (CCEV_RETRIEVEACK) event.
6. Application should reroute SCbus time slot for retrieved call.
7. When call is not held, application will receive hold reject (CCEV_HOLDREJ) event.
8. Application should take no action on call's SCbus time slot.

NOTE:

NOTE: A request to retrieve a held call cannot be rejected in the DPNSS protocol.

Hold and retrieve - remote initiated

Step	Dialogic API	Action/Result	Dialogic Event
1	---	CALL CONNECTED	---
		<--	CCEV_HOLDCALL
	---	CALL HELD	---
2	Unroute SCbus time slot for held call
3	cc_HoldAck( )	-->
		:
4		<--	CCEV_RETRIEVECALL
5	Reroute SCbus time slot for retrieved call
	---	CALL NOT HELD	---
6	Take no action
7	cc_HoldRej( )	-->

1. Receives a request to place a connected call on hold (CCEV_HOLDCALL).
2. Application accepts hold request; should unroute SCbus time slot for requested call.
3. Accepts hold request (cc_HoldAck( )).
4. Receives request to retrieve a held call (CCEV_RETRIEVECALL).
5. Application receives retrieve request; should reroute SCbus time slot for requested call.
6. Application rejects hold request; should take no action on call's SCbus time slot.
7. Rejects hold request (cc_HoldRej( )).

NOTE:

NOTE: A request to retrieve a held call cannot be rejected in the DPNSS protocol.

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