ADTRAN 25 manual Off Premises Metallic Cable Connections, Off Premises Non Metallic Connections

INSTALLATION

Off Premises Metallic (Cable) Connections

The connection between the System 25 and another DS1 interface is in most cases a T1 line with repeaters. The proper lightning protection must be provided (as shown in Table 2-B).Figure 2-23 shows a diagram of the off premise cabling. See the “install CSU” section of this manual for the installation instructions for the CSU.

* D S X - 1 R E F E R S T O A P H Y S I C A L C R O S S - C O N N E C T F O R D S 1 S I G N A L S

Figure 2-23. DS1 Connections—Off Premise Cabling

Off Premises Non Metallic Connections

Many alternatives to DS1 metallic transmission facilities exist. Some of these systems include Iightguide (fiber optics), microwave, infrared, and radio waves. Other type transmission facilities can be used as long as they are technically compatible and connected via the DS1 cross connect point. Figure 2-24shows a block diagram of non metallic cabling transmission systems.

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