A study of signalling interworking between B-ISDN and N-ISDN | |
| Author | Pipop Kamalaspitak |
| Call Number | AIT RSPR no.TC-97-10 |
| Subject(s) | Signaling system 7 Digital communications |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. TC-97-10 |
| Abstract | This study deal with the signalling interworking between broadband and narrowband network. The common .channel signalling system SS No.7 play the role to be used especially for the interworking at the Network-Node Interface. Current SS No.7 is used for N-ISDN by connecting to !SUP (ISDN User Part) level. To make the same connection as simple as possible for B-ISDN application, the same level ofISUP has been modified to be used in the B-ISDN. Both ISUP for narrow-band (called N-ISUP) and broadband (called B-ISUP) are then interworked with each other via the Interworking Unit (IWU) that has been recommended by ITU-T. Signalling network evolution is one important part to be discussed. Here, the ATM trunking service is proposed and three methods of interworking are stated. The solutions for signalling network evolution are then discribed. The introduction of a new broadband network and then connect to the existing narrowband network is seem to be more simple but less effective performance compared to the introduction of broadband signalling within an existing network. The interworking scenarios proposed in ITU-T I. 580 are also explained. The impact of interworking performance such as message length and delay should be taken into account when considering on the system. The software design of signalling interworking function between B-ISUP and NISUP is proposed. The output results of normal successful basic call setup and cleardown between B-ISUP and N-ISUP according to the different message formats are studied. It is seen that various fields within parameters of the signalling messages such as interworking indicator, propagation delay counter, echo control device, etc. have to be updated when mapped from one side to the other side. |
| Year | 1997 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. TC-97-10 |
| Type | Research Study Project Report (RSPR) |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Ahmed, Kazi Mohiuddin |
| Examination Committee(s) | Lehtimaki, Seppo;Erke, Tapio |
| Scholarship Donor(s) | The Communications Authority of Thailand |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1997 |