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SCPC Single Channel per CarrierSCPC (Single Channel per Carrier) is a satellite transmission system with a separate carrier for each channel, as opposed to frequency or time division multiplexing - including DVB - which combines many channels on a single carrier.
With regard to IP over satellite, SCPC/SCPC transmission is also the preferred choice for Voice-over-IP (VoIP) and other delay critical applications. Thanks to the missing multiplex, in the case of SCPC digital processing is straight forward, with the result of some 150 ms less latency compared to DVB/SCPC.
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  VSAT Electronics Sets
Electronics Sets are designed for atrexx' IP over Satellite services. Our policy is to provide a one-stop shopping experience, offering service packages together with the required hardware sets.  2way2sat - Satellite Details
2way2sat is currently available in Europe, the Middle East, Central Asia, Africa and South America. Find out the Geographical Service Availability. As terminal uplink performance is generally the limiting factor of a VSAT link, return channel requirements are given for all satellites.  VSAT Benefits
VSAT network advantages include ubiquity, quick deployment capability, voice and data communication functionality, and cost-control |
The primary advantage of SCPC is the architecture which allows full connectivity between any sites in the network. SCPC allows to set-up quickly a satellite link (point-to-point or point-to-multipoint) without any need to gather other channels at the uplinking teleport. The incremental usage of the satellite transponder enables a flexible expansion of the network.
There are, however, several disadvantages in SCPC when compared with the other techniques. In a SCPC system, each data channel requires a separate satellite modem at each earth station, which increases cost in ground equipment and translates into a higher set-up fee for the customer. In a network of VSAT stations, the most important drawback often is the fact that SCPC is per definition a "dedicated bandwidth" technology. Thus SCPC/SCPC services do not allow to share the bandwidth available on the satellite among several or many VSAT stations - neither in the upstream nor in the downstream. The result is a less economic overall solution.
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