EMS Technologies Canada Ltd. HSD-440 用户手册
23-15-30
1-14
24 JUN 09
EMS SATCOM
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-440 High-speed Data Terminal
K. Fault Conditions
A failure in the HSD-440 terminal may be due to a number of fault conditions. Upon
detection of a fault condition, the HSD-440 terminal activates its red, Fault LED. The
potential fault conditions are as follows:
detection of a fault condition, the HSD-440 terminal activates its red, Fault LED. The
potential fault conditions are as follows:
•
Channel card fault
•
HPA fault
•
Internal ROM fault
•
Internal RAM fault
•
Over temperature fault
L. Remote Reset
The remote reset output provides an external reset function for the complete HSD-440
terminal. Pressing the momentary normally open (NO) switch resets the system's
processor-card circuitry.
terminal. Pressing the momentary normally open (NO) switch resets the system's
processor-card circuitry.
The remote reset has the same function as pressing the test button on the front panel of
the terminal.
the terminal.
8.
User Interfaces
The HSD-440 terminal can support multiple voice and data communication configurations.
The most likely user configurations include a networking device such as a router that allows
multiple users to optimize and share the channel capability offered by the HSD-440 terminal.
multiple users to optimize and share the channel capability offered by the HSD-440 terminal.
The networking device must be able to decide which combination of services is required at
any particular moment and activate it accordingly. Therefore, simultaneous Ethernet and ISDN
connections are required.
any particular moment and activate it accordingly. Therefore, simultaneous Ethernet and ISDN
connections are required.
A different way to achieve this effect is for one of the Ethernet ports to carry a PPPoE virtual
connection between the networking device (typically a router) and the HSD-440 terminal.
Support for PPPoE is also required on the user's side. HSD-440 terminals support two Ethernet
interfaces. Ethernet can provide SBB, SCPC, or MPDS services; whereas, ISDN (BRI-ST) is
only capable of SCPC service.
connection between the networking device (typically a router) and the HSD-440 terminal.
Support for PPPoE is also required on the user's side. HSD-440 terminals support two Ethernet
interfaces. Ethernet can provide SBB, SCPC, or MPDS services; whereas, ISDN (BRI-ST) is
only capable of SCPC service.
Voice and fax devices are supported by direct connection to the HSD-440 terminal via EURO
ISDN telephones and fax machines or by indirect connection to a router or TA. Two-wire
telephone handsets or voice devices (PBXs) may be directly connected to the POTS ports.
ISDN telephones and fax machines or by indirect connection to a router or TA. Two-wire
telephone handsets or voice devices (PBXs) may be directly connected to the POTS ports.
HSD-440 terminals support two Swift64 Mobile ISDN voice or SCPC data services, one
instance of MPDS over Ethernet (PPPoE), or a single SBB connection.
instance of MPDS over Ethernet (PPPoE), or a single SBB connection.
A. ISDN Circuit-Switched Data Interface
HSD-440 terminals connect to a variety of interface options. The physical interface for
ISDN service is EURO S/T, which supports several types of connections to user
equipment.
ISDN service is EURO S/T, which supports several types of connections to user
equipment.
HSD-440 terminals provide one ISDN S/T bus interface, which is capable of hosting up
to seven external physical connections to EURO ISDN devices.
to seven external physical connections to EURO ISDN devices.