Mitel MX-ONE Missed Call / Call List on DBC442202

The MX-ONE web interface for configuring the IP phone config files does not provide the option to enable Call List (Missed Call) on the programmable keys of the DBC 442202.

The option can be enabled manually:

Got to the root folder of the web server (where the IP phone files are stored).
Backup the existing d42x02-config.txt file.
Edit the file:

[FunctionKeysDBC422]
Settings=5
CallWaiting=8
CallBack=1
CallList=9
Transfer=2
FreeOnSecond=3
MessageWaiting=7
Conference=0
EnablePBXStoring=YES

The IP phone will have to be restarted so as to read the new config.

NEC SL1000 Telnet access

To be able to run ping and more:

10-20 Item 6: Set DIM Output port to TCP Port 23.
90-31 DIM Access: Enable, set username and password.

Possibly a System Initialisation -> 2nd Initialisation will be needed.

Mitel MMC and SIP trunks

Some SIP providers do not recognise '+' in the numbering. So if the MMC is battling to receive calls out of office ("blue" registration), the problem is the '+' numbering. Change the number to '00' on the Controller Web interface and the host communications server.