Call progress tones: France

Table 1. Tone parameter values (France).

This table describes the characteristics of French call progress tones. For each different tone name (Dial Tone, Ring Tone, and Busy Tone) the minimum, nominal, and maximum frequency in Hertz is listed, followed by the minimum and maximum power ratios in decibels. Continuous tones are identified, and for discontinuous tones, details of the minimum, nominal, and maximum durations in milliseconds that the tone is on and off are listed.

Tone Name Tone Label Tone Type Frequency n (Hz) Level (dBm) Time On (ms) Time Off (ms)
n Min Nom Max Min Max Min Nom Max Min Nom Max

Dial Tone

Dial

Dial

1

250

440

485

-40

0

Continuous tone

Ring Tone

Ring

Ring

1

385

440

485

-40

0

1340

1500

1660

3340

3500

3660

Busy

Busy

Busy

1

385

440

485

-40

0

400

500

600

400

500

600

International Dial Tone

Dial

Dial

1

275

330

385

-40

0

Continuous tone

2

385

440

485

-40

0

Routing Tone

Routing

Other

1

406

440

474

-40

0

40

50

60

40

50

60