Elevator intercom system

• Main Authors: LI GUOSONG, ZHENG ZONGMING, ZHANG JUNJIE, KUANG GUOSHENG
• Format: Patent
• Language: Chinese; English
• Published: 24.02.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; SELECTING; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

The utility model provides an elevator intercom system which comprises a cloud server, a fixed host and a unit extension, the fixed host and the unit extension are connected with the cloud server through a public network, the fixed host is arranged in a control room, and the unit extension is arranged in an elevator machine room. The unit extension set is connected with the plurality of telephones through wires. In the system, the host and the unit extensions are connected through the Cat.1 public network, so that the construction cost and the maintenance cost are effectively reduced, and the communication distance is not limited; the host adopts a dual-host mode of a fixed host and a mobile host, so that the convenience of host management is improved; the unit extension set adopts an echo cancellation circuit, so that the call quality can be effectively improved. 本实用新型提出了一种电梯对讲系统，包括云服务器，以及与云服务器通过公网连接的固定主机和单元分机，固定主机布置于控制室，单元分机布置于电梯机房；单元分机通过导线与多个话机连接。该系统中，主机和单元分机通过Cat.1公网连接，有效降低了建设成本和维护成本，并且通讯距离不受限制；主机采用了固定主机和