Universal Remote DMS-100 Especificaciones descargar pdf (Pagina 60)

2-2 Ringing in Series I peripherals

297-1001-131 Standard 06.01 October 2000

Figure 2-1 Series I peripheral ringing system architecture

LM and RLM ringing hardware

Ringing hardware for the LM and RLM is described next.

Ring generator interface

The NT2X27 RGI card interfaces the LM or RLM signal processor (SP) with

ringing generators. The RGI card communicates with the signal processor over

a bi-directional data bus (NT2X16/NT2X02). The signal processor sends

information on the active ringing generator and the ringing type to the RGI

over the bi-directional data bus. Upon receiving the information, the RGI

retrieves the appropriate ringing drive signal from its on-board memory and

applies the signal as a pulse-width modulated signal to the ring generator

ampliﬁer input.

Six versions of the RGI are available to support the following ringing schemes:

• 20 Hz BOC (87 V RMS) - NT2X27AA

• decimonic MF ringing - NT2X27AB

• harmonic MF ringing - NT2X27AC

• synchromonic 16 Hz ringing - NT2X27AD

Bay 0

Signal processor

Bay 1

Signal processor

RGI 0 RGI 1 RGI 0 RGI 1

RGI–1

RGI–0

RGI–1

RGI–0

MUX

LC 0 LC 31

Line drawer 0–19

MUX

LC 0 LC 31

Line drawer 0–19

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 133 134

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Universal Remote DMS-100 Especificaciones Pagina 60