Universal Remote DMS-100 Spezifikationen PDF herunterladen (Seite 76)

3-8 Ringing in Series II peripherals

297-1001-131 Standard 06.01 October 2000

RCT ringing hardware

Following is a brief functional description of the RCT ringing hardware.

NT6X80 Ring/pad. The ring/pad circuit card provides PCM samples of

ringing signals. The control complex, upon determining the

type of ringing required for a given line, accesses the sample

PCM signal from the ring/pad card memory.

NT6X85 DS-1 Interface. The DS-1 interface card converts parallel

data from the control complex to a serial format for

transmission over the DS-1 links to the RCT.

Table 3-5 SCM-100R ringing hardware component description (Sheet 2 of 2)

Component Description

Table 3-6 RCT ringing hardware component description

Component Description

QPP436/437 DS-1 repeaters: The DS-1 repeaters regenerate the DS-1

signals to produce standard level input signals and monitor

the incoming signal for proper level, and for errors,

generating alarms when errors are detected.

QPP428/498 Protection switch: The protection switch controls the

communications over the protection line, switching

communications from a faulty link to the protection link.

QPP419 Digroup card: The digroup cards interface the DS-1 signals

with the address and control signals in the RCT.

QPP417 Address control remote: The address control remote card

interfaces the digroup cards with the drivers, local switch,

and line test circuits.

QPP417 Driver: The driver card controls the flow of PCM data

between the line shelves and the digroup cards.

QPP426 Ringing generator: The ringing generator provides

single-frequency ringing power to the subscriber lines.

QPP435 Positive ringing generator: The positive ringing generator

provides 20 Hz ringing signal superimposed on +54 VDC for

superimposed ringing.

QPP430 300 V converter: The 300 V converter provides ringing

voltage for frequency selective lines.

QPP422 Ring distribution card: The ring distribution card distributes

the ringing signals to the line shelves.

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Universal Remote DMS-100 Spezifikationen Seite 76