Dialogic 6.2 manual Making Call Transfers Using Qsig, Supplementary Services Support, November 184

Making Call Transfers Using QSIG

Making Call Transfers Using QSIG

ISDN QSIG

QSIG is an ISO standard that defines the ISDN signaling and control methods used to link PBXs in private ISDN networks. The standard extends the “Q” point in the ISDN logical reference model, which was established by the ITU-T in its Q.93x series of recommendations that defined the basic functions of ISDN switching systems.

QSIG is an ISDN based protocol for signaling between nodes of a Private Integrated Services Network (PISN). In particular, QSIG allows compatibility among products in a multi-vendor environment.

QSIG is only specified for the ISDN Interface Type Point-to-Point, that is you cannot configure or use this protocol in conjunction with a Point-to-Multi-Point interface.

Supplementary Services Support

	QSIG supports the following supplementary services:
	„ Calling Line Identification Presentation (Caller ID)
	„ Calling Line Identification Restriction
	„	Advice of Charge
	„ Call Diversion (Unconditional, Busy and Not Responding)
	„	Call Transfer
	„	Name Identification
	This service uses the same caller ID functions that are used with
	other protocols: BfvLineWaitForCall and BfvCallWaitForSetup.
Calling Line Identification	Uses the BfvCallSetup function which allows the Bfv application to
Restriction	set call presentation and screening on a per call basis.
Advice of Charge (AOC)	Supplementary service enables a user to receive information on the
	recorded charges for a call when the call is terminated.

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