Abstract: Systems, methods and media for enhanced voice call procedures are provided. A method for enhanced voice call procedure includes receiving at a CSFB-IWF a request to provide routing information for a UE for which an incoming voice call is received. The request is received from an HLR and includes a UE identifier. The UE is operating in an LTE network. The method also includes sending a page along with a TMSI for the UE to an MME in the LTE network that can locate the UE along with the TMSI. The page signal causes the UE to switch to a legacy (3G) network. The method further includes detecting an MSC hosting the UE that is located in the legacy network. The method also includes receiving an MSRN for the UE from the hosting MSC and sending to the HLR a message including the MSRN in response to the request.

Abstract: A method and system are provided for enabling packet-based tandem free operation C(FO). In one example, the method includes monitoring packets sent between network elements to identify a TFO request message and a TFO acknowledgement message. A substitute TFO acknowledgement message is sent from an intermediate network element if no TFO acknowledgement message is identified, and both TFO and non-TFO call legs may be established.