Q.931 : ISDN user-network interface layer 3 specification for basic call control

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Q.931 : ISDN user-network interface layer 3 specification for basic call control

Recommendation Q.931/I.451 (11/88)

Approved in 1988-11

Status : Superseded

	Table of Contents
This Recommendation is also included but not published in I series under alias number I.451

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2010-10-06

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2010-10-06

E 36045

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2010-10-06

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