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7.7.1. ISDN BRI port settings
Interface
– adjusts the BRI interface of the gateway. This
port operates as a network termination with respect to the
other ISDN terminals on the given port. In addition to
monitoring and diagnostic functions, the GSM gateway
provides access to the D-channel and power supply to the
other ISDN terminals connected in this mode.
Port setting
Interface –
NT (simulate PSTN NT) or TE (connection
like ISDN terminal)
Point-to-point
– when the gateway is connected to one
device only (i.e. TE port of your PBX). It is possible to
choose fixed TEI (Terminal Endpoint Identifier)
assignment from range 0 to 63 (0 is mostly used for the
point-to-point configuration) or dynamic TEI assignment
TEI = 64 in case of point-to-point configuration. For
dynamic TEI assignment TEI is assigned from range 64
to 126. TEI = 127 is used for broadcast messages.
Point-to-multipoint
– if the gateway is connected to more
terminals the dynamic TEI assignment must be selected.
DISA dial tone
– Activated DISA DTMF dial tone for
second dial (used for connection on PBX extension line)
7.7.2. Tone signalling for calls to ISDN
Dial tone
– with this function enabled, the GSM
gateway sends the dialtone to the NT port if the SETUP
message does not include the calling subscriber's
number..
Ring tone
– selection of control ring tones which are to
be played to the caller from the ISDN network
7.7.3. Generating busy tone
To BRI for X sec
– in case of activation this parameters,
busy tone will be played for X seconds after call to
GSM termination.
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