ISO/IEC 29341-26-16:20 17符合[1]。它定义了在本文中被称为存在服务的服务类型。 存在服务是一种UPnP服务，其允许控制点(或更好地称为电话控制点(TelCP))通过电话服务器(TS)设备或电话客户端(TC)设备(以用于存在服务的UPnP服务器设备的角色)来管理存在信息。此服务为控制点提供以下功能: -联系人的存在，访问由UPnP电话服务器设备提供的联系人的存在信息。由存在服务引用的联系人可以经由电话管理服务和电话数据模型来管理。 -管理存在信息，更新存储在TS中的存在状态； 此服务不提供以下功能:-更新本地UPnP网络的存在状态，从UPnP服务器设备到远程存在服务器(即，本地UPnP网络外部)。 -从远程存在服务器(即，在本地UPnP网络之外)检索联系人的存在信息。 当由存在服务提供的特征与电话管理特征相关联时，则可以递送地址簿和地址簿中联系人的存在的集成管理。

ISO/IEC 29341-26-16:2017 is compliant with the [1]. It defines a service type referred to herein as Presence service.
The Presence service is a UPnP service that allows control points, or better known as Telephony Control Points (TelCP), to manage presence information through a Telephony Server (TS) device or a Telephony Client (TC) device (in the role of UPnP server device for Presence service). This service provides control points with the following functionality:
- Presence of contacts, access the presence information of contacts, as provided by the UPnP Telephony Server device. Contacts referenced by the Presence service may be managed via PhoneManagement service and the Phone Data Model.
- Managing presence information, update the presence status stored in the TS;
This service does not provide the following functionality:
- To update the presence status of the local UPnP network, from the UPnP server device to remote presence servers (i.e. outside the local UPnP network).
- To retrieve the presence information of contacts from remote presence servers (i.e. outside the local UPnP network).
When the features provided by the Presence service are associated to the PhoneManagement features, then an integrated management of the address book and the presence of contacts in the address book can be delivered.