Abstract
In the present MobileTelecommunications scenario, the transmission of SS7 signalling on traditional TDM circuits is evolving to a SS7 over IP network (SoIP) solution, due to the continuous efficiency research in optimizing transmission and to the continuous goal of cost reduction. Some operators are using SoIP network in a national environment, while international SoIP networks are going to be deployed in a few years. Since transmissions over satellite may represent a fast way to deploy an international Backbone, TIM performed a trial in cooperation with TILAB, using Cisco Signalling Gateways and EUTELSAT satellite network. This paper describes the most significant results obtained by this experience, with respect to two critical aspects of satellite connection: the Transmission Delay and the Bandwidth Availability. Satellite delay put in evidence some practical limitations for the current Cisco release (called MB9), if compared with the traditional terrestrial Backbone; a special up-graded release (MB9-SAT) resolved them, but dynamic allocation of bandwidth asked for a detailed investigation on configuration criteria, in order to avoid system congestion. Both releases have been tested also with a delay-line simulator, to examine their performances on traffic management with delay varying between 0 and 700 ms. These activities drove us to outline an operative reference model, useful to understand network behavior under different conditions and to configure its fundamental parameters.
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Keywords
- Control Transmission Protocol
- Round Trip Time
- Wide Area Network
- Congestion Window
- Stream Control Transmission Protocol
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References
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© 2004 IFIP International Federation for Information Processing
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Maggiore, G., Pirrone, L., Kouang, G.D., Piovan, F., Galluzzo, B.R. (2004). Soip Over Satellite Testing – TIM Experience. In: Groz, R., Hierons, R.M. (eds) Testing of Communicating Systems. TestCom 2004. Lecture Notes in Computer Science, vol 2978. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-24704-3_8
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DOI: https://doi.org/10.1007/978-3-540-24704-3_8
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-21219-5
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