“Call Block” feature on Traditional (Centrex) phone lines
- Access the Call Block feature by dialing '260' from the handset. (**Note 1)
- Voice prompted menu navigation is as follows:
'3' - Toggle Call Block feature on/off. (**Note 2)
'#01#' - Add the last incoming caller to your blocked number list (preferred method)
'#' - Manually add a 10-digit phone number to the blocked number list (**Note 3)
'*' - Remove an entry from the list of blocked numbers
'1' - Verify the list of blocked numbers
'0' - Returns user to menu options
**Note 1 - If you receive a “fast busy” signal immediately after dialing code '260', then contact ISC Client Care for assistance. They must add a telephone feature “SCRJ/Selective Call Rejection” to your phone line.
**Note 2 - You will be prompted to add at least 1 10-digit telephone number to toggle the feature on.
**Note 3 - The system does not allow the manual entry of a 10-digit cell phone numbers. If unable to add it using '#01#', then open a ticket with ISC Client Care and provide the telephone number to be blocked on your handset.
Please contact ISC Client Care online at http://supportcenter.upenn.edu, by email at help@isc.upenn.edu, or by phone at 215-898-1000 if you have any additional questions or need assistance with this feature.