12-SD Telephones – to adjust move wheel-type control (left side) toward front of phone.
30-SD Telephones – press the “up” arrow (face of phone) during incoming call.
12-SD – adjust display by sliding the wheel-type control right side (toward) back of set.
30-SD – when phone is idle, press the “up” arrow (located on face of phone).
If you hear a “fast” busy, verify the number you are dialing and ensure dialing instructions are correct. If problem persists contact the Help Desk at 871-2371.