Dial Tone

350+450

Continuous

Alt Dial Tone

400

(0.25/0.25/0.25/3.25) on/off

Secondary Dial Tone

Dial Tone

Dial Tone

Busy Tone

400

(0.375/0.375) on/off

Fast Busy

400

(0.25/0.25) on/off

Intercept Busy Tone

400

(0.75/0.75) alternating tones

Ring Tone

400+450

(0.4/0.2/0.4/2.0) on/off

Call Waiting Tone

400

(0.2/0.1/0.2/7.5) on/off

Number Unobtainable Tone

400

(2.8/0.2) on/off

Ring Current Frequency

25 Hz

Minimum Flash Hook Time

50ms

Maximum Flash Hook

300ms

Default Caller Display Type

DTMFA

Default Message Waiting Indication Type

On: 101 V on Phone V2 modules and IP500 phone cards, otherwise 81 V

Companding

a-law

Dialing Timeout

30 seconds from start of dialing

Disconnect Tone

Number unobtainable

Disconnect Method

Busy tone disconnect

Display Language

English UK

Feature Phone Clearing

Go idle

Voicemail Truncation Time

7 seconds

Default Currency

INR

Date/Time Format

dd/mm 24 hour

Default Time Zone

(GMT+05:30) Chennai, Kolkata, Mumbai, New Delhi

Daylight Savings Time

No

Default DST Calendar

None

CLI Type

DTMF

Termination Impedance

600 R

Balance Impedance

350 R (1000 R||210nF)

Busy Tone Detection

400 Hz 0.75/0.75 seconds

Busy Tone Detection Time

7 seconds.

Disconnect Clear

0.5 seconds

Hook Flash Pulse Width

0.5 seconds

Ring Detection Settings

Persistency: 0.2 seconds

Ring Off Maximum: 5.0 seconds