ITU-T Q.721
FUNCTIONAL DESCRIPTION OF THE SIGNALLING SYSTEM No. 7 TELEPHONE USER PART (TUP)
active, Most Current
Buy Now
| Organization: | ITU-T |
| Publication Date: | 1 November 1988 |
| Status: | active |
| Page Count: | 3 |
scope:
General
Use of Signalling System No. 7 for telephone call control signalling requires:
- application of Telephone User Part (TUP) functions, in combination with
- application of an appropriate set of Message Transfer Part (MTP) functions.
A general description of the signalling system and the division of functions between the Message Transfer Part and the Telephone User Part are presented in Recommendation Q.700 and the requirements of interaction between those two parts are contained in Recommendation Q.701.
Document History
ITU-T Q.721
November 1, 1988
FUNCTIONAL DESCRIPTION OF THE SIGNALLING SYSTEM No. 7 TELEPHONE USER PART (TUP)
General
Use of Signalling System No. 7 for telephone call control signalling requires:
- application of Telephone User Part (TUP) functions, in combination with
- application of an appropriate set...