ADTRAN ISU 128 - Manual (Page 54)

Chapter 6. Configuration
61202.029L2-1 ISU 128 User Manual 39
The ISU 128 displays the Call ID for all dumped calls in the Status buffer. See
the section Status Buffer for more information on the Status buffer.
Because different switches handle calls and Call ID differently,
use the following procedure to determine if a seven or ten digit Call ID (phone
number) should be stored:
1. Select Ansr if SN0. . .9 under Call Screening.
2. Store your seven digit number in SN0.
3. Place a call to the ISU 128 with the stored number to determine whether it
answers properly.
4. If the ISU 128 does not answer the call, look at the Call ID message in the
Status buffer. An explanation of Status buffer messages is located in the
appendix Status Buffer Messages. More than likely, the Call ID number is a
ten digit number
5. Reenter the number in SN0 as it is displayed in the Call ID message and
test Call Screening again.