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Primary to Basic Rate ISDN Multiplexer
SALES: 0118 965 5100
BRI Require SPID (National ISDN protocol only)
This option controls how calls to/from uninitialised BRI TA's are handled. If it is set to YES
they are blocked.
An uninitialised BRI TA is one that has not provided a valid SPID.
BRI HOLD Reserve Channel (National ISDN protocol only)
If this option is set to “Yes” one b channel on the BRI is kept free if one or more calls are on
hold with no specific b channel reserved on that BRI. Hence, at least one of the calls can be
retrieved at all times.
NB: for ETSI protocol it is set to yes but not displayed.
Numbering plan (National ISDN protocol only)
This option sets how the Primary to Basic Rate ISDN Multiplexer decides to stop waiting for
more digits when keypad dialling is being used. This is necessary since National ISDN does
not support overlap dialling on PRI lines. The dialled digits have to be stored until the whole
number is received.
If it is set to “Unknown”, the number is assumed complete 10 seconds after the last digit is
received.
If it is set to N.America the number format is known for local, national, special and N11
numbers and the number is assumed complete after 0, 4 and 20 seconds as appropriate. Since
the number format is not known for international numbers in this case the number is assumed
complete 10 seconds after the last digit is received.
With either setting dialling '#' after the number indicates that the number is complete.
The N.America setting should be used for the countries that share the international code of '1'.
These are USA, Canada, Bahamas, Barbados, Bermuda, Caribbean, Puerto Rico and US
Virgin Islands. Otherwise, the “Unknown” setting should be used.