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The Connected Number parameter is an ISDN parameter found in the Connect message. It is used to implement the Connected Line Identification Presentation (COLP) supplementary service. The Connected Number parameter is sent in the backward direction to identify the number that is connected to a call. Because of potential changes in a call such as call redirection and call transfers, the connected number parameter may be different than the called party number. This feature interworks the connected number parameter between the SIP and ISDN protocols. Refer to the Call Flows below.
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Below are instructions on how to configure the IMG 2020 to interwork the Connected Number parameter between SIP and ISDN. Before configuring, the IMG 2020 must have an initial configuration created on it. Refer to the Basic Configurations procedure and verify the basic functionality has been configured. Also, since the feature uses interworking between the SIP and ISDN protocol, verify that ISDN signaling and ISDN channel groups have been configured. Refer to the Configure ISDN topic for information on configuring ISDN.
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A SIP Profile is needed to enable this feature and also to use the new X-Dialogic Connected Info private SIP header. Refer to SIP Profile - SGP topic for creating a SIP profile.
Right click on the SIP Profile object created and select New SIP Headers. In the SIP Headers object that appears, enable the X-Dialogic Connected Info field. See screen capture below. Refer to SIP Profile - Headers topic for more information.
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