User Manual

RI signal for incoming SMS has two types in accordance with the value of +CNMI or
#E2SMSRI. In case +CNMI=3,1, the negative going pulse like as figure 4.5 is generated, one
time.
In case #E2SMSRI = <x>, the negative going pulse like as figure 4.6 is generated, one time.
4000ms
1000ms
RING
1000ms
RING
4000ms
Figure 4.4 RI signal for \R2
1000 ms
Figure 4.5 RI Signal for +CNMI=3,1