PBX restoring lost connections - automatically uses switching data stored during original connection

摘要

The PBX allows lost connections to be re-established automatically without either of the parties having to take special measures. The data for re-establishing a lost connection is obtained by storing the switching data generated when the two parties are connected for the first time. The connection is re-established before either of the parties, thinking the connection permanently lost, is prompted to replace his handset.