Siemens 600Series - Manual (Page 132)

7-4 ROLMphone 300/600 Series User Guide
Bad Line Reporting
If you have a bad connection with an external call, Bad Line Reporting
lets you report the bad connection so that it is logged at the
communications server. This provides general information for service
technicians.
You may also want to explain the problem in detail to your company
repair service.
Your company’s repair service number _______.
To report a bad
line ➩ Ask the other party to hold.
➩ Press the Bad Line (BADLINE) key, or
press TRANSFR and dial * 5 6 3.
➩ Continue your conversation.
After you hang up, dial your company’s repair service number and
describe the problem.