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MX651P

Telephone Subscriber Pulse Metering & Anti Fraud Tone Processor

MX-COM Inc  

Telephone SPM and Anti Fraud Tone Processor

11

MX651 - PRELIMINARY INFORMATION

6.2 System Timing

Notes Min Max Unit

Rx

12KHz Response Delay

40 50 ms

De-response Delay

40 50 ms

18KHz Response Time

8 ms

De-response Time

8 ms

Tx

Transmit 0 Time Note 1, 2

5.1 ms

Transmit 1 Time Note 1, 2

5.1 ms

Note:

1. Tx Transmit Times include both Response/De-response Times and Rise/Fall Times.

2. The Tx Transmit 0 and Transmit 1 Time must exceed 5.1ms.

6.2.1 Timing Diagrams

12kHz TONE BURSTS

"DETECT 12kHz" PIN

RESPONSE

DELAY

DERESPONSE

DELAY

Figure 3: SPM (12kHz) channel. Toneburst and tonegaps < the response and de-response delays are ignored

18kHz TONE BURSTS

"DETECT 18kHz" PIN

RESPONSE

TIME

DERESPONSE

TIME

Figure 4: Security tone (18kHz) channel. The response and de-response times are short to enable the device to

recognize short ON-OFF bursts (20ms each)

© 1997 MX•COM Inc.

www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054

Doc. # 20480137.003

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.

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