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VSAT technology and installation >> iDirect Forum: hubs and terminals >> burstable bandwidth

Message started by smlt_vsat on Aug 15th, 2008 at 12:18pm

Title: burstable bandwidth
Post by smlt_vsat on Aug 15th, 2008 at 12:18pm

I was going thru intp user guide and did some pratices . whats the differnce betweeen burstable bandwidth and information rate and transmission rate ?

What does no.of remotes/upstream means and what dos it effect in a network


Title: Re: burstable bandwidth
Post by dot on Aug 25th, 2008 at 11:41am

Bandwidth is a measure of IP throughput and there are various types, namely peak or maximum rate, committed rate (also known as dynamic) and minimum data rate. These are all IP data rates that form the QOS rules and are configured in the QOS tab of iBuilder.

In the return or inbound direction the IP data is carried using TDMA and the measure after the TDMA process is information rate (TDMA overhead is added), FEC is then added and the measure becomes transmission rate, the signal is then modulated and the measure becomes symbol rate, guard band or inter-carrier spacing is then added and you have leased MHz. Typically you may have 3 Mbps IP data rate, 3.9 Mbps information rate, 5.8 Mbps transmission rate, 2.9 Msps symbol rate and require a lease of 3.5 MHz. The process is the same on the outbound or downstream. You can use the conversion tool tab in iNPT to convert.

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