Name:
ITU-T Q.500 PDF
Published Date:
11/01/1988
Status:
[ Active ]
Publisher:
International Telecommunication Union-T
Introduction
This series of Recommendations Q.500-554 applies to digital local, combined1, transit and international exchanges for telephony in Integrated Digital Networks (IDNs) and mixed analogue/digital networks, and also to local, combined, transit and international exchanges in an Integrated Services Digital Network (ISDN).
The series of Recommendations comprises:
Q.500 Introduction and field of application
Q.511 Exchange interfaces towards other exchanges
Q.512 Exchange interfaces for subscriber access
Q.513 Exchange interfaces for operations, administration and maintenance
Q.521 Exchange functions
Q.522 Digital exchange connections, signalling and ancillary functions
Q.541 Design objectives – General
Q.542 Design objectives – Operations and Maintenance
Q.543 Performance design objectives
Q.544 Exchange measurements
Q.551 Transmission characteristics of digital exchanges
Q.552 Transmission characteristics at 2-wire analogue interfaces
Q.553 Transmission characteristics at 4-wire analogue interfaces
Q.554 Transmission characteristics at digital interfaces.
Considerations have been primarily on exchanges utilizing, at least in part, time division switching techniques. However, these Recommendations are implementation independent, and other system implementations using alternative techniques (e.g., space division switching) may be possible, which would meet the requirements of these Recommendations.
1 A "combined" digital exchange is one which includes both local exchange and transit exchange functions (see definition 1005 in Recommendation Q.9).
| Edition : | 88 |
| File Size : | 1 file |
| Number of Pages : | 6 |
| Published : | 11/01/1988 |
