ITU-T Q.31-1988
NOISE IN A NATIONAL 4-WIRE AUTOMATIC EXCHANGE

Standard No.

ITU-T Q.31-1988

Release Date

1988

Published By

International Telecommunication Union (ITU)

Latest

ITU-T Q.31-1988

Scope

use of precious metals such as platinum, palladium, gold, silver, or alloys of these metals. If, for one reason or another, it is not desired to the contacts, or if enough contact pressure cannot be provided, it is preferable to use the metals or alloys m

ITU-T Q.31-1988 history

• 1988 ITU-T Q.31-1988 NOISE IN A NATIONAL 4-WIRE AUTOMATIC EXCHANGE