Chapter 3 System Highlights

Rotary Dial Pulse and DTMF Signaling

(1) Rotary Dial Signal

 

Description

 

 

 

Specifications

 

 

 

 

Receiving

 

 

Sending

 

 

 

 

 

 

 

 

 

Dial Speed

9 to 22 pps

 

 

10 pps +/- 0.8pps

 

 

 

 

20 pps +/- 0.8 pps

 

 

 

 

 

 

 

 

 

 

Break Ratio

55 to 77 %

 

 

67 +/- 3% or 62 +/- 3%

 

 

Inter-Digit Pause

Min. 256 msec.

 

 

300 to 1,000 msec.(10 pps)

 

 

Switch-Hook Flash Detection

384 to 2,300 msec.

 

Not applicable

 

(2) DTMF Signal

 

Description

 

 

 

 

 

Specifications

 

 

 

 

 

 

Receiving

 

 

 

Sending

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High Frequency Group

 

 

 

1,209Hz

1,336Hz

1,477Hz

 

 

 

 

 

 

 

 

697Hz

1

2

3

 

 

Signal Code

 

Low Frequency Group

 

 

770Hz

4

5

6

 

 

 

 

 

 

 

852Hz

7

8

9

 

 

 

 

 

 

 

 

941Hz

*

0

#

 

 

Frequency Deviation

+/- 1.8 %

 

+/- 0.8 %

 

 

 

 

 

Signal Duration

Min. 40 msec.

 

64 or 128 milli-sec.

 

 

 

 

Inter-Digit Pause

Min. 40 msec.

 

32 to 240 msec.

 

 

 

 

Signal Level

-46 to -5 dBm

 

 

-10 dBm (low group)

 

 

 

 

 

 

- 8 dBm (high group)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unwanted Frequency

 

Not Applicable

 

40 dB below the power of signal frequency

 

 

Components

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 3- 18

UNIVERGE NEAX 2000 IPS Request For Proposal (RFP) Reference Guide

 

Issue 6

Page 66
Image 66
NEC 2000 IPS manual Rotary Dial Pulse and Dtmf Signaling, Rotary Dial Signal, Description Specifications Receiving Sending