Tone |
Frequency (Hz) |
Cadence (seconds) |
Dial |
425 |
Continuous. |
Alternate Dial Tone |
425 |
Continuous. |
Secondary Dial Tone |
425 |
Continuous. |
Busy Tone |
425 |
(0.35/0.35) on/off. |
Fast Busy Tone |
425 |
(0.2/0.2) on/off. |
Intercept Busy Tone |
425 |
(0.35/0.35) on/off. |
Ring Tone |
425 |
(1.0/4.0) on/off. |
Call Waiting Tone |
425 |
(0.2/5.0) on/off. |
NU |
425 |
Continuous. |
Analog Phone Settings |
Ring Current Frequency |
25Hz |
Ring Current Cadence |
(1.0/4.0s) on/off. |
Minimum Flash Hook Time |
0.025s |
Maximum Flash Hook Time |
0.350s |
Default Caller Display Type |
None |
Default Message Waiting Indication Type |
51V Stepped |
Locale Specific Behavior |
Disconnect Tone |
– |
Feature Phone Clearing |
Go Idle |
Display Language |
Russian |
Cyrillic display support for the Russian rus locale is limited on phones as follows:
6400 Series/4400 Series: Limited to phone menus and displayed names.
2400 Series/5400 Series: Limited to button labels and displayed name.
4600 Series/5600 Series: All display strings if using the double-byte build of phone firmware.
EU24/EU24BL: No Cyrillic language support.
