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Page 492 of 504 Appendix E: M3110, M3310, and M3820 telephones
553-3001-367 Standard 3.00 August 2005
Note 1: All terminals must be isolated from the input winding and each
terminal must be isolated from all other terminal windings. A separate
winding is required for each terminal, and grounds must not be
connected.
Note 2: The QUT1 closet power supply source is not compatible with
Meridian digital telephones.
The AC source must be rated at 29 V AC, 700 mA isolated. The DC source
must be rated at 42 V DC, 300 mA isolated, with current limiting output of 1
amp.
Figure 103
Closet Power Supply configuration
1
2
3
4
5
6
W
BL
6-conductor
line cord
from telephone
To IDF
Tip (r)
Ring (g)
Closet Power Supply
(Shumway SBI 221-25 or equivalent)
Connects to an
isolated output
553-AAA072
4