User`s manual

EAGLE - ANNEX A.3. EUROISDN communications guide (EUROPE) 61
1.3.- Protocol
Although the ISDN is supposed to be a standard, differences can be found between the
protocols used by different countries.
In Europe and in other geographic areas, there is a protocol called EURO ISDN. There are
minor differences between the EURO ISDN in different countries. These differences do not
affect the Eagle.
1.4.- Directory Numbers (DN’s)
These are the telephone directory numbers assigned to the line.
In the case of the EUROISDN protocol, there may be one or several directory numbers,
depending on the configuration of the line; these numbers are not associated with either of the
two communication channels, unless this association is specifically made by programming them
in the Terminal Adapter. In the case of the Eagle, the directory numbers are programmed in the
“NUMBER LINE X” Terminal Adapter configuration options. If the numbers are not programmed
in the terminal (NUMBER LINE X options blank), any of the directory numbers can be used to
call either of the equipment’s channels, with the general rule being that the call will enter
through channel 1 if it’s free, and otherwise will enter through 2. If a number is programmed for
a certain channel, that channel will only respond to calls made to that number.
If the directory numbers are programmed incorrectly in the unit, it will be able to make outgoing
calls but will not respond to incoming calls.
2.- Connecting the Eagle to the ISDN line
If the physical interface used is the S/T (Europe), the line will be connected to the RJ-45
jack (8 pins) marked ISDN-ETSI on the back of the equipment, using an 8-wire modular phone
cable (RJ-45 to RJ-45).
3.- Configuration Parameters for the Eagle TA
3.1.- Terminal Adapter Configuration Menu