Comelit MT CT 01 - Manual (Page 14)

MT CT 01
MT CT 01 13
S
YSTEM WITH TWO TELEPHONE LINES
Diagram 3 shows the installation diagram of a system with two telephone lines and four branches.
Diagram 3 - CT 09A: System with 2 analog lines and 4 branches
B
RANCH EXPANSION CARD
A
RT
. 2907
By inserting an expansion card 2907, it is possible to expand the number of extension branches to 8.
Installation of the expansion
Before proceeding, the 220V voltage to the switchboard must be removed. At this point, according to what is
indicated in Fig. 4 :
1. Remove the side covers and the central cap from the switchboard.
2. Insert card 2907 in the special housing.
BE CAREFUL to respect the correct insertion polarity.
3. Put back the covers and the cap.
4. Reconnect the 220V voltage to the switchboard.
5. The card will be recognised automatically.
Default configuration
Once the card is installed and configured, configuration of the branches added is as follows:
• They are enabled to receive and call over the lines present in the switchboard
• If the entry phone expansion (2909) is present, they are enabled to receive calls from the external unit
• They are configured as user branches
What needs to be programmed in the case of card replacement:
No programming is needed - the configurations / enablements of the branches are kept.