Installation Manual for digital sets - IP sets - SIP sets AMT/PTD/TR/0001/3/7/EN
M7xx and I7xx set options 05/2008 Page 6-7
6.4 M715 extension
6.4.1 Description
The only difference between the M715 extension and the M705 extension is that the 20
programmable keys are monitored by LEDs instead of LCD icons.
The other specifications remain unchanged.
6.4.2 Recommendation concerning the power supply unit
M760, M760E and M780 sets
This configuration requires an external power supply when connected to the M760 or M760E. For
the M780, the set's power supply is sufficient.
i760/i760E and i780 sets
When using this extension with i760/i760E and i780 sets, we recommend using an external power
supply.
This configuration requires an external power supply on the M705 extension when connected to
the i760/i760E.
For the i780, the set's power supply (by remote supply or power unit) is sufficient.
Attention :Do not connect an external power supply to an M705 extension that is fitted to an i780
set.
Table summarising the power supplies necessary for an M705 extension associated with i760/i760E
and i780 sets.
6.4.3 Marketing codes
6.4.4 Options
N/A.
Set mains unit M705 extension's mains
unit
Remote supplied i760/i760E HT1438A
Power unit supplied i760/
i760E
PN1121A HT1438A
Remote supplied i780 X
Power unit supplied i780 PN1120A X
Reference Code
M715, anthracite blue TD2980B
M715, glacier white TD2980C