VTech Telecommunications Ltd 80-4221-00 Manuale Utente

This document is proprietary to V

TECH 

E

NGINEERING 

C

ANADA 

L

TD

.

Specifications are preliminary and are subject to change without notice.

21146

Specifications marked with * are guaranteed at the nominal testing temperature and voltage on
all units with the use of automated production test equipment (ATE)

*

DTMF Frequency Tolerance

-1.5

+1.5

%

*

DTMF Low Group Tone Level

1

-7.5

-5.0

-4.0

dBm

*

DTMF High Group Tone Level

1

-5.5

-3.0

-2.0

dBm

DTMF Combined Tone Level

1

+2.0

dBm

DTMF High Group Preemphasis (Twist)

2.0

4.0

dB

Pulse Dialling Break Duration

60

ms

Pulse Dialling Make Duration

40

ms

Pulse Dialling Rate

10

pps

Ring Detection Frequency

2,3

15

68

Hz

Ring Response Voltage

3

40

Vrms

Ring No-Response Voltage

4

15

Vrms

Notes:

1. Measured across a 900

Ω

 terminating impedance

2. The ringer must ring with signals within this range
3. Measured with a frequency of 20Hz
4. The ringer must not ring with signals within this range