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Figure 20: Remote PBX Far-End Party Transfers Call to Local Phone With Path Replacement In this use case, the following entities participate: • The customer call originates from DN3000 deviceD in PBX1. • The agent receives the call at DN2000 deviceB in clusterCisco Unified CM1. • AgentD transfers the call to DN1000 deviceA in clusterCisco Unified CM1. During an automatic call recording session where the far-end (agent) party in a remote PBX transfers the call to a phone in the local cluster by using path replacement, the following steps take place: 1. PartyD (far-end party = customer in remote PBX) calls partyB (near-end party = agent) in local cluster by dialing 82000. 2. The remote PBX sends an setup message to the local cluster (Cisco Unified CM1) through a PRI QSIG gateway. The message contains information about partyD. 3. PartyB (near-end party = agent in local cluster) answers the call. 4. Because the agent line appearance is configured for automatic recording, the recording session for the media streams automatically gets triggered. Cisco Unified Communications Manager first makes a recording call to the built-in bridge (BIB) of the partyB (agent) IP phone for the agent voice. 5. Cisco Unified Communications Manager makes the second recording call to the BIB of the partyB (agent) IP phone for the customer voice. 6. The recorder receives and answers the recording call setup messages that are sent from Cisco Unified Communications Manager for the agent voice through a SIP trunk. The agent IP phone starts to fork the partyB (agent) voice stream to the recorder. 7. The recorder receives and answers the recording call setup messages that are sent from Cisco Unified Communications Manager for the customer voice through a SIP trunk. The agent IP phone starts to fork the partyD (customer) voice stream to the recorder. 8. PartyD in the remote PBX initiates a consultation transfer (presses Transfer) and dials DN81000 deviceA, which is in the local cluster. 9. The remote PBX sends an setup message to the local cluster (Cisco Unified CM1) through a PRI QSIG gateway. The message contains information about partyD. 10. Local partyA answers the call from partyD. 11. Remote partyD presses Transfer to complete the transfer. 12. Remote PBX sends UPDATE. 25