Universal Remote DMS-100 Especificaciones descargar pdf (Pagina 22)

1-6 DMS-100 ringing overview

297-1001-131 Standard 06.01 October 2000

The treatments for FSR revertive calls are deﬁned in table TMTCNTL,

subtable LNT, in the following tuples:

• originator revertive multiparty frequency with three or more parties

(ORMF)

• originator revertive frequency with two parties (ORAF)

• terminating party (TRRF)

The following ﬁgure illustrates the sequence of events that occur when a

revertive call is made on a multiparty, FSR line.

Figure 1-3 Revertive call on multiparty, FSR line

Note 1: fR indicates the ringer's tuned frequency.

Note 2: The previous diagram does not show the ground connection of the

tip and ring ringing circuits. These grounds are provided at the subscriber's

location.

1. Calling party (party 2) goes off-hook, dials called number, receives fast

busy,then hangs up.

Tip

(see note 1)

fR=30 Hz

fR=20Hz

Dial pulses

Ring

Party 1

Party 2

Party 3

Party 4

2. The called party (party 4) receives 30 Hz ringing signal.

Tip

fR=30 Hz

fR=20Hz

Ring

Party 1

Party 2

Party 3

Party 4

30 Hz

Ringing signal

3. When called party answers, the call enters the talking state.

Tip

(see note 1)

fR=30 Hz

fR=20Hz

Ring

Party 1

Party 2

Party 3

Party 4

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 133 134

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