Polling Controller Reference Manual
Page 30
Patent
Information U.S. Patent No. 5, 241, 587
UM-112-801 Polling Controller Carrier
Capacity
Holds
up
to
8
M-390
Polling
Controller
Units.
Dimensions
6.96”
H x 17.30” W x 12.00” D
(mounts
in
19-inch
rack).
Power
Internal
UL-CSA
recognized
power
supply.
System
DTMF Transmit Level
-10 dBm into 900 ohm termination (combined level).
Shall not exceed -9 dB with respect to 1 mW when averaged over any
3-
second
period.
Call Progress Tones Toward Central
Office
-10 dBm into 900 ohm termination (combined level). Shall not exceed
-9 dB with respect to 1mW when averaged over any 30second period.