AT&T DS1/DMi/ISDN-PRI manual CEM and CDM Cabling Configurations, DS1/DMI DSX-1

DS1 TRANSMISSION AND CABLING 3-7

●The transmission system connects to a DS1 via a DSX-1 cross-connect

●The transmission system meets any special requirements for the application (for example, the transmission of bipolar violations if B8ZS line coding must be used)

Figure 3-3, Nonmetallic Cabling Configurations, shows nonmetallic cabling transmission systems.

DS1/DMI

DSX-1

DS1

655FT

MAXIMUM

MICROWAVE		MICROWAVE
INTERFACE		INTERFACE
LIGHT-GUIDE		LIGHT-GUIDE
'INTERFACE		INTERFACE
INFRARED		INFRARED
		INTERFACE
INTERFACE
ANY DSX-1	– – – – – – – – – – – – – –	ANY DSX-1
		INTERFACE
INTERFACE

DSX-1

DS1

655 FT

MAXIMUM

Figure 3-3.Nonmetallic Cabling Configurations

CEM AND CDM CABLING CONFIGURATIONS

Both the CEM and CDM provide a DSX-1 cross-connect to the DS1/DMI-BOS and therefore connect directly to a DS1/DMI-BOS. Any of the previously described metallic or nonmetallic transmission media may be used for completing the connection from a DS1/DMI-BOS to CEMs and CDMs. Figure 3-4,CEM and CDM Cable Configurations, shows stand alone and combined CEM and CDM configurations.

Refer to Service Manual — Installation and Maintenance — Channel Division Multiplexer (365-165-

101)and to BCM32000 — Description, Installation, and Maintenance — Digital Transmission Systems (365-287-100) for appropriate distance limitations and switch settings.