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

Standard No.

ITU-T Q.31 SPANISH-1988

Release Date

1988

Published By

International Telecommunication Union (ITU)

Latest

ITU-T Q.31 SPANISH-1988

Scope

It is desirable that the requirements concerning noise conditions for a national 4-wire automatic exchange be the same as for an international exchange (see Recommendation Q.45, § 5).

ITU-T Q.31 SPANISH-1988 history

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