[{“cellsNumber”:2,”row”:”Definition”,”lhsI”:”The%20breakout%20gateway%20control%20function%20%28BGCF%29%20is%20an%20independent%20functional%20entity%20and%20is%20embedded%20in%20the%20S-CSCF.%20The%20BGCF%20selects%20an%20exit%20to%20the%20PSTN/PLMN.%20The%20exit%20and%20the%20BGCF%20can%20be%20on%20the%20same%20or%20different%20IMS%20networks.%20If%20they%20are%20on%20the%20same%20IMS%20network%2C%20the%20BGCF%20routes%20calls%20to%20the%20MGCF%20for%20processing.%20If%20they%20are%20not%20on%20the%20same%20IMS%20network%2C%20the%20BGCF%20routes%20calls%20to%20a%20BGCF%20in%20the%20other%20IMS%20network%20for%20processing.”,”rhsI”:”The%20MGCF%20implements%20signaling%20plane%20interworking.%20It%20performs%20conversion%20between%20Session%20Initiation%20Protocol%20%28SIP%29%20messages%20and%20Bearer%20Independent%20Call%20Control%20Protocol%20or%20Integrated%20Services%20Digital%20Network%20User%20Part%20%28ISUP%29%20messages.%20The%20MGCF%20also%20controls%20the%20IP%20multimedia%20media%20gateway%20%28IM-MGW%29%20on%20the%20media%20plane.”},{“cellsNumber”:2,”row”:”References”,”lhsI”:”The%20interworking%20between%20the%20IMS%20and%20the%20PSTN/PLMN%20is%20implemented%20through%20the%20media%20gateway%20control%20function%20%28MGCF%29%20and%20breakout%20gateway%20control%20function%20%28BGCF%29.”,”rhsI”:”Interworking%20between%20an%20IMS%20network%20and%20a%20CS%20network%20%3A%3Cbr%20/%3E%3Cbr%20/%3EMost%20carriers%20have%20deployed%20the%20public%20switched%20telephone%20network%20%28PSTN%29%2C%20public%20land%20mobile%20network%20%28PLMN%29%2C%20next%20generation%20network%20%28NGN%29%20before%20deploying%20the%20IP%20multimedia%20subsystem%20%28IMS%29%20network.%20If%20the%20carriers%20expect%20the%20existing%20networks%20to%20continue%20to%20provide%20services%2C%20they%20must%20deploy%20the%20media%20gateway%20control%20function%20%28MGCF%29%20to%20implement%20interworking%20between%20the%20IMS%20network%20and%20the%20existing%20networks.”},{“cellsNumber”:2,”row”:”Scope”,”lhsI”:””,”rhsI”:”%3Cimg%20style%3D%22width%3A%20100%25%3B%20height%3A%20auto%3B%22%20src%3D%22../../wp/wp-content/plugins/custom-qa/images/image_1519066564.png%22%20alt%3D%22%22%20/%3E”}]

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