Trunking, Connection Types, And Call Timers - Nortel Remote Office 9150 Installation And Administration Manual

Remote Office 9150 description

Trunking, connection types, and call timers

This section describes the features that are supported on the PSTN.
Trunk connections
The following digital trunk connections are supported:
n
ISDN BRI from the Remote Office 9150 unit to the PSTN
n
ISDN PRI from the PSTN to the RLC at the host site
Remote Office supports Multiple Subscriber Numbering (MSN). If the Central
Office provides each B-channel with a unique DN then the first B-channel you
configure defines the number for both B-channels.
64K (56K) dynamic adaptation
With some carriers, 64K calls routed over a 56K PSTN infrastructure may cause
errors. The dynamic adaptation feature allows the Remote Office 9150 unit and
the RLC to dynamically detect the limitation of the bandwidth. The call is then
downgraded from 64K to 56K.
Bandwidth allocation
The RLC automatically allocates trunk bandwidth to the Remote Office 9150
connection as needed. For example, as calls are initiated and bandwidth
requirements increase, additional trunk connections are established. Likewise, as
calls terminate and bandwidth requirements drop, connections to idle trunks are
terminated.
Connection types
The Remote Office 9150 connection to the RLC can be defined on the RLC as
permanent or on demand. A permanent connection means that the ISDN
connection to the host PBX always remains open. An on demand connection
means that the ISDN connection is established only when a connection with the
host PBX is required.
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Standard 2.0
Remote Office 9150