User guide

Chapter 7 – Configuring the DMI4
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CPID Mask [0000000]
When the DMI4 sends an extension number in an SMDI packet, it uses the CPID
Mask to pad that extension number to the required number of digits. For example, if
the extension number is 1234 and the CPID Mask is 0000000, the DMI4 outputs the
leftmost three 0s from the CPID Mask and then the four digits of the extension.
Most voicemail systems will work with the default value of 0000000 (7 zeros).
However, if the voicemail system expects ten digits in the SMDI packet, then a value
of 0000000000 (10 zeros) should be used. If the voicemail system expects other digits
in front of the extension numbers, then the CPID mask can be used to achieve this
too. For example, 8880000000 would result in all SMDI packets being ten-digits long
and the three left-most digits would always be 888.
MWI Ports []
This parameter controls which port the DMI4 uses to pass the SMDI's MWI command to
the PBX. In addition, on the Norstar it determines which port the DMI4 uses, in addition to
port 1, to build the name table. It is recommended that this parameter be left blank unless
there is a valid reason why it should be changed to something other than its default setting.
If changed, this string must be exactly ten digits long. Each digit position, 0 . . . 9,
corresponds to the last digit of an extension number whose MWI needs to be set or cleared.
The value in that digit position is a port number (1 through 4) which is the port number to
be used for setting and clearing MWIs on extensions ending with that digit. If this field is
left blank, then port number 4 is used for all SMDI-controlled MWI setting and clearing
operations. (Note that additional PBX configuration may be required to enable a port to be
able to set and clear MWIs.)
For example, if MWI Ports is set to 3333333333, then all MWI setting and clearing is
performed by port 3 instead of port 4. If MWI ports is set to 3434343434, then even-
numbered extensions have their MWIs set and cleared by port 3 and odd-numbered
extensions have their MWIs set and cleared by port 4, thus splitting the work of setting and
clearing MWIs between ports 3 and 4 (this would only be required on systems with a large
number of voicemail ports). We recommend that this parameter is set so that the last port
does the MWI processing: the last port is least likely to be used for incoming calls and thus
has the most free time available to process MWIs.
If your system has multiple DMI4s (using SMDI) installed (see Chapter 8 ), only the last
DMI4 in the system processes MWIs. The MWI Ports parameter then controls which
port(s) on the last DMI4 is used for this, and is ignored by the other DMI4s.
Disconnect [OFF]
Setting this parameter to ON enables the DMI4 to produce a non-standard SMDI packet
when a caller hangs-up. This is in addition to the normal disconnect supervision which is a
drop in the loop current on the analog line. The non-standard SMDI packet would have a
format similar to:
MD0010001H 0000000
Include Names [OFF]
This parameter is available on Mitel SX-200/2000 systems. If the PBX is configured to
allow Caller ID names and numbers, then this parameter will enable DMI4 to use an
extension to standard SMDI to pass this name information. The M430 set being emulated
must have a class of service which will allow the calling party’s name to appear on the
M430 set with a softkey “Caller Name”. The DMI4 will produce two SMDI packets, one
with the number and the second with both the number and the name following.