Q.421 : Digital line signalling code

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Q.421 : Digital line signalling code

Recommendation Q.421 (11/88)

Approved in 1988-11-25

Status : In force

Access : Freely available items

Available languages and formats :

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Format

Size

Posted

Article Number

English

PDF (acrobat)

50546 bytes

1989-02-10

E 10902

Español

PDF (acrobat)

55392 bytes

1989-02-10

S 10902

Français

PDF (acrobat)

57230 bytes

1989-02-10

F 10902

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TIES users

Available languages and formats :

Click on the selected format
and language to get the document

Format

Size

Posted

Article Number

TIES users

English

Word

35515 bytes

1989-02-10

E 10902

Español

Word

45653 bytes

1989-02-10

S 10902

Français

Word

44347 bytes

1989-02-10

F 10902