National (Significant) Number - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp
国外标准现行
标准号:ITU-T Q.105-1989
标准名称: 国内(有效)号码
英文名称:National (Significant) Number - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp