Calling Line Identifier
MX602 - PRELIMINARY INFORMATION
21
Start Timer
<15ms required for minimum valid TDET
T3, minimum valid DET pulse width
Mute decision point
T1 = 0 (no hold-off)
DET pulse width (TDET
)
TDET
must be > T3 or < 65ms
to be considered a
valid DET
DET
MUTE
Not a valid CIDCW transaction
sequence at this point
TONE / FSK
MODE
0 Level
T2, time for muting to take affect
No Signal
CAS
NEAR END
VOICE
FAR END
VOICE
Note: The actual signal received by the MX602 is the sum of the CAS, Near-End Voice, and Far-End Voice signals.
Figure 24: Invalid CIDCW Transaction Initiation Telephone Set Timing Sequence (DET pulse < 15ms)
T3, minimum valid DET pulse width
Start Timer
65ms, maximum valid TDET
Mute decision point
T1 = 0 ( no hold-off)
DET pulse width (TDET
)
TDET
must be > T3 or < 65ms
to be considered a
valid DET
DET
MUTE
T2, time for muting to take affect
0 Level
TONE / FSK
MODE
Not a valid CIDCW transaction
sequence at this point
No Signal
CAS
NEAR END
VOICE
FAR END
VOICE
Note: The actual signal received by the MX602 is the sum of the CAS, Near-End Voice, and Far-End Voice signals.
Figure 25: Invalid CIDCW Transaction Initiation Telephone Set Timing Sequence (DET pulse ≥ 65ms)
© 1998 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 336 744-5050 Fax: 336 744-5054
Doc. # 20480136.004
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