Numbering Plan for the International Telephone Service - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements Study Group XI; 8 pp
国外标准现行
标准号:ITU-T Q.11-1989
标准名称: 国际电话服务的数字计划
英文名称:Numbering Plan for the International Telephone Service - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements Study Group XI; 8 pp