Nortel DMS-100 Series General Description Manual page 38

1-22 DMS-100 ringing overview
Figure 1-19 Distinctive ringing patterns - frequency selective scheme
Note: Coded 30 Hz ringing for LMEs does not support 2/4/8/10 multiparty or
revertive ringing.
Distinctive ringing (ringing type C3C)
The ringing signal for markets that have adopted the C3C ringing type (such
as Malaysia and Australia) is based on a 3 s cycle. The following figure
illustrates the distinctive ringing pattern for C3C ringing. There is no
distinctive ring 0 since this is considered to be standard ringing. Note that
distinctive ringing 1 (DRING1) for MBS sets differs from DRING1 for
non-MBS sets, but the remaining DRING patterns are the same.
297-1001-131 Standard 06.01 October 2000
1 party, 1FR
Code 3
Code 4
Code 5
ANI/coin
6 s
2 s
0 1 2 3 4 5
0 1 2 3 4 5
0.5 s
2 s 1.5 s
6 7 8 9 10 11
6 7 8 9 10 11