| 摘要 |
PCT No. PCT/US93/09609 Sec. 371 Date Apr. 7, 1995 Sec. 102(e) Date Apr. 7, 1995 PCT Filed Oct. 7, 1993 PCT Pub. No. WO94/09603 PCT Pub. Date Apr. 28, 1994A digital private branch exchange system and methods of operating same are provided. A system is capable of providing improved and integrated conferece calling, voice mail, music on hold, and call forwarding features, without being subject to the typical problems associated with the prior art. |
