AT&T Telephone DS1/DMi/ISDN-PRI Manuale Utente Scaricare il pdf (Pagina 107)

100

101

SYNCHRONIZATION OF DIGITAL FACILITIES

5-17

TN2131 CIRCUIT PACK

COMPOSITE

CLOCK

OUTPUT #1

COMPOSITE

CLOCK

CONVERTER

SYNC

CABLES

ALARMS

NOTE 1

LOS

DETECTION

COMPOSITE

CLOCK

OUTPUT #2

SYNC

OUTPUT

NOTE 2

NOTES:

Alarm signals are cabled to the cross-connect field. For System 85 and Generic 2, they are then cross-connected

and cabled back to the maintenance or CPE interface.

System 85 and Generic 2 applications require that the composite clock synchronization signal be connected to the

module control or TMS carrier via an intercarrier cable. Traditional module control carriers (for both System 85

and Generic 2) use the H-600-260 group 1 cable, while Generic 2 universal module control carriers use the

H-600-271 group 1 cable.

Figure 5-9. External-Clock Interface

Figure 5-10. External-Clock Duplicated Synchronization

1 2 ... 102 103 104 105 106 107 108 109 110 111 112 ... 395 396

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AT&T Telephone DS1/DMi/ISDN-PRI Manuale Utente Pagina 107

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