ITU-T Q.553 SPANISH-2001
Transmission characteristics at 4-wire analogue interfaces of digital exchanges

Standard No.

ITU-T Q.553 SPANISH-2001

Release Date

2001

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T Q.553 SPANISH-2001

Scope

This Recommendation provides characteristics for: 4-wire analogue interfaces (Type C11, C12 and c13); input and output connections with 4-wire analogue interfaces; and half connections with 4-wire analogue interfaces in digital transit and combined local and transit exchanges, in accordance with the definitions given in ITU-T Rec. Q.551, particularly in Figures UQ.551 and 214.551.

ITU-T Q.553 SPANISH-2001 history

• 2001 ITU-T Q.553 SPANISH-2001 Transmission characteristics at 4-wire analogue interfaces of digital exchanges