Q.521 : Digital exchange functions

Français Español

Home : ITU-T : Publications : Recommendations : Q Series : Q.521 : Q.521 (03/93)

Recently posted - Search Recommendations

Q.521 : Digital exchange functions

Recommendation Q.521 (03/93)

Approved in 1993-03-01

Status : In force

	Table of Contents

Access : Freely available items

Available languages and formats :

Click on the selected format
and language to get the document

Format

Size

Posted

Article Number

English

PDF (acrobat)

76827 bytes

1994-05-16

E 4425

Español

PDF (acrobat)

86017 bytes

1994-05-16

S 4426

Français

PDF (acrobat)

89385 bytes

1994-05-16

F 4424

Access :

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

54161 bytes

1994-05-16

E 4425

Español

Word

66847 bytes

1994-05-16

S 4426

Français

Word

68490 bytes

1994-05-16

F 4424