ITU-T Q.521 SPANISH-1993
DIGITAL EXCHANGE FUNCTIONS

Standard No.

ITU-T Q.521 SPANISH-1993

Release Date

1993

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T Q.521 SPANISH-1993

Scope

This Recommendation applies to digital local, combined, transit and international exchanges for telephony in Integrated Digital Networks (IDN) and mixed (analogue/digital) networks and also to local, combined, transit and international exchanges in an Integrated Services Digital Network (ISDN).

ITU-T Q.521 SPANISH-1993 history

• 1993 ITU-T Q.521 SPANISH-1993 DIGITAL EXCHANGE FUNCTIONS