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Primary to Basic Rate ISDN Multiplexer
TECHNICAL: 0118 931 2233
less it is assumed to be an extension number and will be appended to the new Calling
Party Number.
Route based on telephone number allowing for extension number (+ option)
Store a telephone number with a '+' after the last digit (e.g. ) for each interface that
is to receive incoming calls.
Store it as the first number if CLID generation is on and it is the preferred choice for when a
Calling Party Number is to be changed on or added to an outgoing call.
For the example of
Incoming calls with Called Party Number containing 5551234 will be accepted (any
Called Party Subaddress is ignored). The 5551234 and any preceding digits will not
be passed through to the called interface. This is so that only the extension number is
passed through.
Outgoing calls (with CLID generation on) will have their Calling Party Number
checked (any Calling Party Subaddress is ignored).
Outgoing calls with Calling Party Number containing 5551234 will have their Calling
Party Number unchanged. Otherwise if none of the numbers for that port match then
the Calling Party Number (and Subaddress) will be changed to the first number (and
Subaddress) stored for that port. If the received Calling Party Number is 4 digits or
less it is assumed to be an extension number and will be appended to the new Calling
Party Number.
Examples of Number Set-up (National ISDN protocol)
This appendix gives some example settings for Number Setup when National ISDN protocol
is selected. It also describes how incoming calls are routed and (if CLID generation is on)
how the calling party number on outgoing calls is affected in each case.
The examples for the telephone numbers are given as 7 digits i.e. just the local number.
Telephone numbers with area code e.g. 4445551234 could also be used.
When setting up the numbers it is important to delete any existing numbers that are no longer
required.
For simplicity, the following text assumes that the same format of numbers is used for each
interface.
Subaddressing is not supported when National ISDN protocol is selected.
