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ITU-T K.12 (02/2006)

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Characteristics of gas discharge tubes for the protection of telecommunications installations
This Recommendation gives the basic requirements to be met by gas discharge tubes for the protection of exchange equipment, telecommunication lines and subscriber or customer equipment from surges. It is intended to be used for the harmonization of existing or future specifications issued by gas discharge tube manufacturers, telecommunication equipment manufacturers, administrations or network operators.
Citation: http://handle.itu.int/11.1002/1000/8739
Approval date: 2006-02-13
Approval process:AAP
Status: Superseded
Maintenance responsibility: ITU-T Study Group 5
Further details: Patent statement(s)
Development history
Ed. ITU-T Recommendation Status Summary Table of Contents Download
9 K.12 (05/2010) In force
here
here
here
8 K.12 (02/2006) Superseded
here
here
here
7 K.12 (02/2000) Superseded
here
here
here
6 K.12 (05/1995) Superseded - - here
5 K.12 (11/1988) Superseded -
here
here
4 K.12 (10/1984) Superseded - - Not available
3 K.12 (07/1981) Superseded - - Not available
2 K.12 (11/1980) Superseded - - Not available
1 K.12 (10/1976) Superseded - - Not available