| 摘要 |
<p>A telecommunications disaster recovery system (10) provides telecommunications service to a customer premises during failure of a normal operating mode of the system. Certain customer premises termination equipment (15) considered critical for ongoing operation of a business are connected to a primary PBX (12) during the normal mode of operation, and to a secondary PBX (14) during failure of the normal operating mode. A control unit (40) is provided that includes one manually-actuated control switch (49) for each building or location containing critical termination equipment. Each control switch (49) is open during the normal mode of operation, and closed during failure of the normal mode of operation. One remote switching station (26) is operatively connected to each control switch (49), the primary PBX (12), the secondary PBX (14) and the critical termination equipment (15) associated with the particular building or location. The remote switching station (26) switches the corresponding critical termination equipment (15) to the primary or secondary PBX system (12, 14) based upon the position of the control switch (49).</p> |
