Nortel DMS-100 Series General Description Manual page 33

OFCENG. Office parameter REVRING is described in Office Parameters
Reference Manual.
The following figure illustrates the sequence of events that occurs when a
revertive call is made on a coded ringing, multiparty line.
Figure 1-15 Revertive call on coded ringing multiparty line
1. Calling party (party 4) goes off-hook and dials called number (party 6).
Tip
Ring
2. Calling party goes on-hook and waits for short (revertive) ring.
Tip
Ring
3. Calling party receives revertive ring and called party receives coded ring (Code 2).
Ringing signal
Tip
Ring
Ringing signal
4. When called party answers, revertive ring on calling party side ceases, indicating to the calling
party that the called party has answered. Calling party then goes off-hook and the call enters the
talking state.
Tip
Ring
Party 1
Dial pulses
Party 5
Party 1
DMS-100 Family DMS-100 Ringing System BASE15 and up
Party 2
Party 3
Party 6
Party 1 Party 2
Party 5 Party 6
Party 2
Party 5 Party 6
Party 1 Party 2
Party 5 Party 6
DMS-100 ringing overview 1-17
Party 4
Party 7 Party 8
Party 3 Party 4
Party 7 Party 8
Party 3 Party 4
Party 7 Party 8
Party 3 Party 4
Party 7 Party 8