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Telephone numbers / Integrated Services Digital Network / Identifiers / ISDN User Part / Public switched telephone network / Signalling System No. 7 / Telephone numbering plan / Signaling / E.164 / Telephony / Electronic engineering / Signaling System 7


ITS ApG 9 V5ITS Application Guide Transfer of number information in national interconnections
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Document Date: 2013-09-05 02:45:18

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File Size: 328,45 KB

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