GB/T 15128-2008 in English

《GB/T 15128-2008信息技术 开放系统互连 会话服务定义》由TC28（全国信息技术标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准采用抽象方法及下列术语定义了由OSI会话层提供的外部可见服务:
a) 服务的原语动作和事件;
b) 与各原语动作和事件相关联的参数数据;
c) 原语动作和事件之间的关系及有效顺序。
本标准中所定义的服务是由OSI会话协议(连同运输服务)提供的,并可被OSI表示协议使用的那些服务。
本标准不规定个别的实现或产品,也不对计算机系统内的实体和接口的实现加以限制,因此,不存在对本标准的一致性要求。
与对称同步功能单元有关的文本不适用于对ITU-T应用的支持。

Scope

This standard defines the externally visible services provided by the OSI session layer by means of abstraction and the following terms: a) primitive actions and events of the service; b) parameter data associated with each primitive action and event; c) primitive actions The relationship and effective sequence between events and events. The services defined in this standard are those services provided by the OSI session protocol (together with transport services) and can be used by the OSI presentation protocol. This standard does not specify individual implementations or products, nor does it impose restrictions on the implementation of entities and interfaces within a computer system. Therefore, there is no conformance requirement to this standard. Text related to the symmetric synchronization functional unit does not apply to support for ITU-T applications.