ITU-T Q.20-1989
Maximum Permissible Value for the Absolute Power Level of a Signalling Pulse - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 2 pp

Standard No.

ITU-T Q.20-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T Q.20-1989

Scope

The CCITT recommends that, for crosstalk reasons, the absolute power level of each component of a short The values given in this table result from a compromise between the characteristics of various existing duration signal should not exceed the values gi

ITU-T Q.20-1989 history

• 1989 ITU-T Q.20-1989 Maximum Permissible Value for the Absolute Power Level of a Signalling Pulse - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 2 pp