Information technology — Telecommunications and information exchange between systems — Interface connector and contact assignments for ISDN Basic Access Interface located at reference points S and T
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基本访问接口的接口连接器和触点分配
Specifies the 8-pole connector (plug and jack) and the assignments of poles/contacts for use in physical interfaces. These physical interfaces may be located at reference points S and T between TEs and NTs and between NT1s and NT2s and shall conform to CCITT Recommendation I.430. Also specifies the requirements for ISDN basic access cords.