ITU-T Q.721:1988-11

Functional description of the signalling system no. 7 telephone user part (TUP)

German title: Funktionelle Beschreibung des Fernsprechnutzerteils (TUP) des Zeichengabesystems Nr.7
Publication date: 1988-11
Original language: English
Pages: 2

Product information on this site:

Quick delivery via download or delivery service

Buy securely with a credit card or pay upon receipt of invoice

All transactions are encrypted

Loading recommended items...