User manual - IEC Telecom

Circuit-Switched (dialed) service
Chapter 1: Introduction
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The following types of circuit-switched connection are available:
• Standard Voice. A low-tariff connection for voice only. The voice signal is
compressed to 4.0 kbps, which reduces the bandwidth use and
consequently the tariff.
• 3.1 kHz Audio. A high quality connection which can be used for Premium
Voice or G3 fax. The signal is uncompressed 3.1 kHz audio, which allows for
optimum voice quality.
• ISDN. A high quality connection which can be used for voice (3.1 kHz
Audio), G4 fax or 64 kbps UDI/RDI data.
Introduction
Note
The BGAN system only supports one Circuit Switched call at a time
per SAILOR FleetBroadband system.
SMS service
The BGAN system provides a Short Messaging Service (SMS) for sending and
receiving SMS messages to and from the terminal.
Supplementary services
The BGAN system also provides the following supplementary services:
• Call hold
• Call waiting
• Call forwarding
• Voice mail
• Call barring
The Inmarsat BGAN system 15