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The IAM (Initial Address Message) is sent to a destination endpoint and contains information needed for call setup. Within the IAM message are parameters labeled as Forward Call Indicators (FCI). Forward Call Indicators contain information relating to the characteristics of the connection, signaling path, and called party sent in the forward direction. This is a mandatory parameter in the IAM message which is used in countries that offer CUG (closed user group) service. The FCI Override object functions as explained below.
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The FCI Override object is created under an specific ISUP Group. The FCI Override object is used to either override or ignore one or all of the FCI parameters in any calls that use this ISUP Group. The complete SS7 network along with all of its objects must first be configured. Once they are configured, the FCI Override can be created and configured. The Default setting of the FCI Override object is to Ignore overriding the parameters.
SS7 - Destination - ISUP Group - BCI Override
Field Descriptions
Forward Call indicator
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Override - Values in FCI parameters will be overridden by values selected in corresponding fields below. (Default values that are displayed in the object will be sent if no value was received for a specific indicator)
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See Forward Call Indicators Table (SIP to SIP-T Interworking) for bit information on the Forward Call Indicator. * If FCI Override is set to Override, parameters marked with an asterisk (*) are the default values selected in the FCI Override Pane and will be available in the outbound IAM message. |
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