Modes Of Operation - AT&T MERLIN LEGEND Reference

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Modes of Operation

The MERLIN LEGEND BRI system operates in Key mode and, with limitations, in
Hybrid/PBX mode. Behind Switch mode is not supported.
Key Mode
The MERLIN LEGEND BRI system was developed primarily to work in Key
mode. Consequently, it functions fully in Key mode with the following exception:
BRI lines will not default on stations or Direct Line Consoles (DLCs). They must
be assigned during system programming.
Hybrid/PBX Mode
BRI is supported in Hybrid/PBX mode with these limitations:
Queued Call Consoles (QCCs) cannot have BRI Access buttons and
therefore cannot initiate CO Transfer (see the "BRI Features" section in
this chapter),
BRI lines in pools should not be mixed with other types of lines (loop-
start, ground-start, PRI, etc.).
All BRI lines in a pool should be configured by the central office (CO) the
same way. In other words, the User Service Order Profile should be the
same. Otherwise, the user can get confused.
Since there is no way to identify the last Directory Number used for a call
on System Access or Pool buttons, Local Area Signaling Services (LASS)
features should not be used on calls made to or from these buttons.
LASS features should be used only on Personal Lines (see the "BRI
Features" section in this chapter).
No Automatic Route Selection or Pool dialout code can be used when a
Transfer destination is dialed on a BRI Access button.
BRI lines will not default into any pool on system startup. They must be
assigned during system programming.
Modes of Operation
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