Definitions for "Q.931"
Keywords:  isdn, itu, setup, retransmission, ccitt
digital subscriber signaling system No. 1 for ISDN users. (AT&T 1995)
ITU-T specification for signaling to establish, maintain, and clear ISDN network connections. See also Q.93B.
CCITT recommendation. The standard for signaling to set up ISDN connections.