ITU-T Q.108-1989
One-Way or Both-Way Operation of International Circuits - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp

Standard No.

ITU-T Q.108-1989

Release Date

1989

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T Q.108-1989

Scope

In order to have as simple as possible equipment in international exchanges anc. to avoid Lmble seizures, System No. 4 has been designed in 1949-1954 for one-way operation of international circuits in semi-automatic and automatic working.

ITU-T Q.108-1989 history

• 1989 ITU-T Q.108-1989 One-Way or Both-Way Operation of International Circuits - General Recommendations on Telephone Switching and Signalling - Functions and Information Flows for Services in the ISDN - Supplements (Study Group XI) 1 pp