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ITU-T G Supplement 31 Principles of determining an impedance strategy for the local network
ITU-T P.59 Artificial conversational speech
ITU-T Q.542 Digital exchange design objectives - Operations and maintenance
ITU-T Q.144 Line signal receiver
ITU-T Q.601 Interworking of signalling systems - General
ITU-T Q.602 Interworking of signalling systems - Introduction
ITU-T Q.667 Interworking of signalling systems - Logic procedures for interworking of signalling system no. 7 (TUP) to signalling system no. 7 (ISUP)
ITU-T Q.686 Interworking of signalling systems - Logic procedures for interworking of signalling system R2 to signalling system no. 7 (ISUP)
ITU-T Q.690 Interworking of signalling systems - Logic procedures for interworking of signalling system no. 7 (ISUP) to no. 5
ITU-T Q.691 Interworking of signalling systems - Logic procedures for interworking of signalling system no. 7 (ISUP) to no. 6
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