CMX602B 查看數據表（PDF） - MX-COM Inc

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CMX602B

Calling Line Identifier plus Call Waiting (Type II)

MX-COM Inc  

Calling Line Identifier plus Call Waiting (Type II)

16

CMX602B PRELIMINARY INFORMATION

START

CMX602B in Tone Alert

Detect mode

IRQ output

No

low ?

Yes (See Note 2)

Mute local handset

and keypad.

See Note 1

Notes:

1. If it is possible to mute the speech output

from the local microphone quickly and without

introducing noise, then this should be done

whenever the CMX602B DET output is high.

2. The IRQ output will be reset by changing

from Tone Alert Detect to FSK Receive mode.

3. When monitoring the CMX602B DET output for

the 50ms period after changing to FSK mode

note that changing between Tone Alert Detect

and FSK Receive modes resets the DET output.

It will then remain low for at least 15ms, after

which if it does go high, it will remain high for at

least 8ms.

Set CMX602B to

FSK Receive mode.

Start timer.

Timer > 50ms ?

No (See Note 3)

Yes

Send ACK.

Start 2 second timeout.

CMX602B DET

output high ?

Yes

Read FSK Message,

display data if

checksum OK.

No

2 second timeout

expired

Clear timeout.

Remove mute from

handset and keypad.

Set CMX602B to

Tone Alert Detect mode.

Figure 15, Flow Chart for 'Off-Hook' Operation of CMX602B

2000 MX-COM, Inc

www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054

Doc. # 20480204.002

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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