Solution
1. Press [Additional Functions].
2. Use [Left cursor] or [Right cursor] to select [5 FAX SETTINGS], then press [OK].
3. Use [Left cursor] or [Right cursor] to select [5 COMMUNICATIONS], then press [OK].
4. Confirm that [1 TEL LINE TYPE] is displayed, then press [OK].
5. Use [Left cursor] or [Right cursor] to select the telephone line type, then press [OK].
[TOUCH TONE]: Tone dialing (default)
[ROTARY PULSE]: Pulse dialing
6. Press [Stop/Reset] to return to the standby mode.
