A Call Detail Recording (CDR) unit can connect to a survivable core server through the server’s Processor Ethernet interface. The Processor Ethernet interface for each CDR is specified in translations. In the event a failure and fragmentation occurs, call details for completed calls are collected. The server with Processor Ethernet or the server controlling one through which the CDR data is sent, will attempt to deliver the records to the CDR output device. If the network is intact to the device, the call records will be delivered. If the server knows that the CDR device is not connected, it will store the records in a buffer. When the system restores and the main server can once again communicate with the CDR device, any records buffered by the main server will download to the CDR output link. Other records that were not delivered to the CDR adjuncts and buffered in a survivable core server will be unrecoverable, as the survivable core server will perform a restart.