User Interfaces - EMS HSD series User Manual

User interfaces

HSD Aeronautical transceivers connect to a variety of
interface options. The physical interface is EURO S/T,
which supports several types of connections to user
equipment.
HSD transceivers provide either one or two ISDN S Bus
interfaces (depending on which model and service
mode is installed).
Each Bus is capable of hosting up to eight, EURO ISDN
devices—which means a two-channel system supports
connections to up to sixteen, EURO ISDN devices.
Each channel card provides one, 64 k B channel that is
available to either ISDN Bus. If the channel (or channels) is
"busy" or "in-call", the request for service is denied (the
system is busy).
For ISDN data devices that support bonding and are
connected to a two-channel card HSD transceiver, the
device will attempt to use both B channels to increase data
throughput as long as no other devices are "in call". (See
the section Bonded calls (two-channel systems only.)
Figure 3 and Figure 4 illustrate a variety of interface
options. Each system set-up configures to meet specific
user needs.
This document contains information that is private and Confidential, and is supplied on the express condition that it is not to be
used for any purpose other than the purpose for which it was issued, nor is it to be copied or communicated in whole or in part, to
any third party other than the recipient organization, without the prior written permission of EMS Technologies Canada, Ltd.
Terminal adapters and routers must be
EURO ISDN S/T models.
CONFIDENTIALITY STATEMENT
Copyright © EMS Technologies Canada, Ltd.
User's Guide EMS-MN-1110-10048
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