SCPC is used for economical distribution of broadcast data, digital audio and video materials, as well as for full-duplex or two-way data, audio or video communications.
In an SCPC system, user data is transmitted to the satellite continuously on a single satellite carrier. The satellite signal is received at a single location, in the case of a point-to-point system, or at many locations in a broadcast application, providing hubless connectivity among multiple sites.
SCPC got its name from the older analog transmission technology, when a single satellite channel could carry only one data carrier. With today's digital technology, SCPC can actually operate in a MCPC (Multiple Channel Per Carrier) mode, with several data carrier multiplexed into a single digital aggregate. For example, two earth stations transmitting 64 kbps carriers to each other can actually provide several compressed digital telephone circuits as well as full-time low speed data circuits if proper voice/data multiplexing equipment is added to each basic system.
Examples of SCPC VSAT Applications...
- Highspeed access to IP networks
- Credit authorizations
- Replacement of terrestrial circuits
- PABX extensions
- Backup circuits for redundancy or diversity
- Inventory management
- Supports true multimedia capabilities--voice, data, fax and e-mail
- Access to remote locations where high-speed terrestrial digital connectivity is not available
- Policy and account management
- Method to bypass PTT’s or local infrastructure
- WAN connectivity
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