Hi everyone,
I work at a small hotel in the Caribbean as IT and we have Mitel SX200 with MDR for posting accounting and our Mitel Dataset 2103 is not working

all are interfaced with our hotel PMS (Fidelio Opera).
Problem: when I call a room number, the name which is displayed is that of a guest which stayed here a couple of years ago.
The first time I called Mitel tech support, they told me that our Mitel dataset 2103 is dead because the power led indicator was flashing.
I currently have 3 Dataset 2103, including a new one I got last week, and when I start them up, they each seem to work in the test mode.
But even the new one's power led indicator flashes.
Connector Dataset:
I have dial tone for the digital line
I have data from Interface but nothing more.
I have seen a lot topics that say that I need to reprogram the Mitel Dataset 2103?
If that's the case, how do I do this?
Please help me with this problem
Thanks a lot
Stéphane