SAILOR 500/250 FleetBroadband

Circuit switched (dialed) service1111Chapter 1: IntroductionTwo types of circuit switched connection are available:• Standard Voice. A low-tariff connection for voice only. The voice signal iscompressed to 4.0 kbps, which reduces the bandwidth use andconsequently the tariff.• 3.1 kHz Audio. A high quality connection which can be used for PremiumVoice, G3 fax or analog modems. The signal is uncompressed 3.1 kHzaudio, which allows for optimum voice quality.• ISDN. A high quality connection which can be used for voice (3.1 kHzAudio), G4 fax or 64 kbps UDI/RDI data.IntroductionNoteThe BGAN system only supports one CS call at a time perSAILOR FleetBroadband system.SMS serviceThe BGAN system provides a Short Messaging Service (SMS) for sending andreceiving SMS messages.Supplementary servicesThe BGAN system also provides the following supplementary services:• Call hold• Call waiting• Call forwarding• Voice mail• Call barringThe Inmarsat BGAN system 15