ITU-T Q.102-1988 PDF

Scope: In international automatic working,the calling subscriber can obtain only such subscriber numbers as are made up of the numerical digits appearing on his dial or push-button set.Hence, he cannot obtain operators reached by code 11 or code 12 signal,or an assistance operator reached by a forward-transfer signal.In principle,he should not obtain access to incoming,delay or information operators1) reached by special numbers.

ITU-T Q.102-1988 Referenced Document

ITU-T E.260 Basic Technical Problems Concerning the Measurement and Recording of Call Durations*， 1993-01-01 Update
ITU-T Q.106 Sending-Finished Signal - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp*， 1989-01-01 Update
ITU-T Q.120 Specifications of Signalling System No. 4 Study Group XI [Superseded: ITU-T Q.121 ITU-T Q.122 ITU-T Q.123 ITU-T Q.124 ITU-T Q.125 ITU-T Q.126 ITU-T Q.127 ITU-T Q.128 ITU-T Q.129 ITU-T Q.130 ITU-T Q.131 ITU-T Q.133 ITU-T Q.135 ITU-T Q.136 ITU-T Q.137 ITU-T
ITU-T Q.28 Determination of the Moment of the Called Subscriber's Answer in the Automatic Service - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp*， 1989-01-01 Update