Hi Majson,
The commands are as follows;
change name - NIINI

IR=xxxx,NAME1="sepay";
set pin - AUCOI

IR=xxxx,AUTH=(pin),CAT=(category with IDD access)
adding extension - this would depend on what type
analog - EXTEI, there are many associations, like NANSI
digital - KSEXI, there are many associations, like NANSI
wireless - GESPI, there are many associations, like NANSI
To connect to a MD110, use either serial(rs232) connection or tcp/ip. For modem setting, it will be the same as the serial.
RS232 - 7 E 1
To log in, I'll PM the details, for security reasons.
Thanks,
Sepay