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The Access Transfer Control Function (ATCF) is a function in the serving (visited if roaming) network. When SRVCC is enhanced with ATCF, the ATCF is included in the session control plane for the duration of the call before and after access transfer. The ATCF may be co-located with one of the existing functional entities within the serving network (that is, P-CSCF or IBCF).
To include ATCF, from the EMA, navigate to All > Profiles > Signaling > Atprofile > Include ATCF_.
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It has two options for the field Include ATCF - Always and Criteria. Select the button against the appropriate field.
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Select the field Criteria to choose between disabling/enabling Roaming UE and Non Roaming UE. For details, refer to Include ATCF - Criteria. |
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