/mcp• Cancel Swap The Swap softkey can be only be used when you use the Transfer or Conference feature. When you press Swap, the phone puts the consultative call on hold and resumes the primary call. Swap operation breaks the internal linkage between the primary and consultative calls, but you can still complete the transfer or conference operation. Cancel When you press Cancel before completing the transfer operation, the TSP receives an event notification from CTI and cancels any pending transfer or conference requests. The Swap and Cancel features operate as follows: • For swap operation, the primary call state is changed to CONNECTED, and the consult call state is changed to ONHOLD. • For cancel operation, the primary call state is changed to ONHOLD, and consult call state remains as CONNECTED. • To complete the transfer operation after swap or cancel, the application invokes LineCompleteTransfer or CciscoLineDevSpecificDirectTransfer. • To complete the conference operation after swap or cancel, the application invokes Cisco Join API – CCiscoLineDevSpecificJoin. When using the Swap and Cancel features, the Cisco Unified IP Phones maintain a consulting relationship between the primary and the consulting calls, on invoking consult transfer or consult conference: • The Swap operation puts the active call on hold and retrieves the held call. • The Cancel operation breaks the consulting relationship between the primary and the consulting calls. When users perform the swap operation, the behavior remains the same while resuming calls and all pending transfer or conference operation are cancelled. Users can swap or toggle during consultative transfer or conference transactions, and also swap or toggle between call sessions during the transaction to check the status of each party. Interface Changes There are no interface changes for this feature. Message Sequences See Refer and Replace Scenarios, on page 935. Backward Compatibility This feature is backward compatible. Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 101 Features Supported by TSP Swap and Cancel Softkeys