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ITU-T Q.141 1993 Edition, January 1, 1993
Complete Document
Superseded By: ITU-T Q.140-Q.180
Signal Code for Line Signalling - Clause 2 - Line Signalling - Specifications of Signalling System No. 5 (Study Group XI)9 pp
Additional Comments: W/D S/S BY ITU-T Q.140-Q.180
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