V.22 bis Modem with AT Commands
CMX866
©
2008 CML Microsystems Plc
51
D/866/5
0
0.5
1
1.5
2
2.5
3
3.5
2.5
3
3.5
4
4.5
5
5.5
Vdd
Vin
Vthi
Vtlo
Figure 14 Typical Schmitt Trigger Input Voltage Thresholds vs. V
DD
-70
-60
-50
-40
-30
-20
-10
0
10
100
1000
10000
100000
Hz
dBm
Bell 202
Figure 15 Maximum Out of Band Tx Line Energy Limits (see note 8)