Excelltel CDX-PH201-M - 3: Ogm Monitor; 4: BGM (Background Music); 5: Back Lamp Set; 6: EXT RING SEL(Extension Ring Selection)

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Key Telephone
3: OGM MONITOR
option: 1 / 2 / 3 / SINGLE TONE
4: BGM (background music)
option: Playing…
5: BACK LAMP SET
option: OFF/ AUTO / ON
6: EXT RING SEL(extension ring selection)
option: RING 01 to 16
7: CO RING SEL(CO line ring selection)
option: RING 01 to 16
8: DP RING SEL (door phone ring selection)
option: RING 01 to 16
9: ALARM RING SEL(alarm ring selection)
option: RING 01 to 16
10: ALARM SET
option:
EXT 01 to 96 00:00
CLEAR EXT. 01 to 96
SET ALL 00:00
CLEAR ALL