CAN/CSA-ISO/IEC 10173:2001
信息技术 系统间的电信和信息交换 位于参考点 S 和 T 的 ISDN 初级速率接入连接器的接口连接器和触点分配
Information Technology - Telecommunications and Information Exchange between Systems - Interface Connector and Contact Assignments for ISDN Primary Rate Access Connector Located at Reference Points S and T