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Overview:

The Originating Line Information parameter conveys information about the originator of a call. Initially, the IMG supported inter-working the ISUP-OLI parameter when passing information from SS7 to SIP and SIP to SS7. F-5117 'Support ISUP-OLI for ISDN-SIP call' adds support when inter-working the ISUP-OLI parameter from ISDN-SIP and SIP-ISDN. When inter-working the ISUP-OLI parameter from ISDN to SIP, the ISUP-OLI parameter is added to the From: Header in the SIP INVITE message. When inter-working the ISUP-OLI parameter from SIP to ISDN, the ISUP-OLI parameter is added to the SETUP message on the ISDN leg. Below explains what is supported and how it is configured.

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Configure these initial objects before proceeding to the procedure below.

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At this point the ISUP-OLI is configured on the IMG. The next step will be to set up the routing so that the specific channel groups are configured to route from ISDN to the External Network element configured above. See any of the multiple topics that describe the routing process. The following two links below are a good starting point.
IMG 1010 - Overview of Routing
IMG 1010 - Configuring Routing