2
O
VERVIEW
OF
THE
BRI M
ODULE
This section provides information on the features and functions of the BRI
module.
Features
The V6000/V6100 supports various ISDN BRI protocols such as ETSI, 5ESS,
and QSIG over BRI.
The BRI module supports 4 BRI ports used for connecting the PSTN to the
IP network. These modules provide RJ-45 ports. The BRI module can be
configured as Lifeline telephone interfaces, switching to the PSTN in case
of power failure or network problems.
Up to five BRI modules are supported, providing a total of up to 20 BRI
digital ports.
Additional
Functions
The BRI module supports the ITU-T I.430 standard, which defines the
ISDN-BRI layer 1 specification.
The configuration of the BRI port as NT or TE is identical to the
configuration of the
ISDN Termination Side
) of the PRI as
follows:
■
A port that is configured as
User Side
is configured as TE (Terminal
Equipment).
■
A port that is configured as
Network Side
is configured as NT
(Network Termination).
When an NT port is active it drives a 38 V line voltage , and sends an
INFO1 signal (as defined in table 4 of the ITU-T I.430 recommendation)
on the data line, in order to synchronize to any TE port that is connected
to it.
