Universal Remote DMS-100 Spezifikationen PDF herunterladen (Seite 58)

1-42 DMS-100 ringing overview

297-1001-131 Standard 06.01 October 2000

Figure 1-30 Timing of audible and power ringing signals - immediate ringing

enabled

Ringing in the UEN

In the UEN, there is no external ringing generator. Iinstead, each line card (line

su/jointfilesconvert/480876/bgroup) containsa ringing generator. The zero crossings of the ringing

sinusoid are monitored and coordinate several control operations that are

synchronized to the ringing signal. The TDM software can change the state of

the ringing relays at the coder-decoders (CODEC) to the zero crossing.

1 ringing cycle

12345 786 91011 0 1 2 3 4 5 7 86 9 10110

Power ring

(LME coded and

superimposed

ringing or LCM

coded ringing)

Power ring (LCE

superimposed

ringing)

Power ring

starts

Audible ring

Ring request

Audible ring starts

1 audible ring back cycle

12345 786 91011 0 1 2 3 4 5 7 86 9 10110

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 133 134

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Universal Remote DMS-100 Spezifikationen Seite 58