SAILOR TT-3084A Fleet 77 SAILOR TT-3086A Fleet 55 - Polaris-as.dk
SAILOR TT-3084A Fleet 77 SAILOR TT-3086A Fleet 55 - Polaris-as.dk
SAILOR TT-3084A Fleet 77 SAILOR TT-3086A Fleet 55 - Polaris-as.dk
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Chapter 2: Introduction<br />
ISDN interface 2.4.4<br />
This interface can be used for connection of ISDN equipment – data <strong>as</strong> well <strong>as</strong><br />
voice/picture b<strong>as</strong>ed equipment (phones, modems, terminal adapters, audio<br />
codecs, video conferencing equipment, STE secure voice, etc.).<br />
On F<strong>55</strong> only one B-channel (1 x 64 kbit/s Data) and one D-channel (control) is<br />
used.<br />
The F<strong>77</strong> optionally supports two B-channels (2 x 64 kbit/s Data). In order to<br />
enable this service you need to enter a special PIN code. Ple<strong>as</strong>e contact your<br />
supplier to retrieve a pin code. As with other services the terminal needs to be<br />
commissioned to this service (see the section The Inmarsat <strong>Fleet</strong> Service on<br />
page 3).<br />
The terminal does not support dynamic switching between one and two Bchannels.<br />
The user needs to decide to use one or two channels before<br />
establishing the call.<br />
When using only one B-channel, ple<strong>as</strong>e ensure that your ISDN equipment is<br />
configured to support one B-channel only.<br />
The following services may be used on the ISDN interface:<br />
• 128 kbit/s UDI (option on F<strong>77</strong>)<br />
• 64 kbit/s UDI<br />
• 56 kbit/s UDI<br />
• Speech<br />
• 3.1 kHz audio<br />
ISDN<br />
• Mini-M voice<br />
Like the terrestrial ISDN network the terminal offers the possibility to have<br />
more than one device connected to this interface. Each device can be<br />
16 Hardware Interfaces
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