ADTRAN 25 manual 22. DS1 connections-4311 Feet or More

Figure 2-21. DS1 Connections—1311 to 4310 Feet

DS1 Connections—4311 Feet or More

For distances of more than 4311 feet, T1 line repeaters are required in addition to the CSUs. See the “Install CSU” section of this manual for installing the CSU. Figure 2-22 shows a functional diagram of this connection. If the connection is being made between the S25 and a DEFINITY G1 or G2, System 75, or System 85, refer to the System 85 Installation Manual (555-1 03-1 04) or the DEFINITY G1 Wiring Guide (555-204-111) or the System 75 Wiring Guide (555-200-111) for the connecting information.

C S U

( N O T E )

6 5 5 F E E T M A X I M U M

D S X - 1 *

C S U

D S 1 ( N O T E )

P R O T E C T I O N

C I R C U I T

D S 1 L I N E

W I T H

REPEATERS

PROTECTION

C I R C U I T

6 5 5 F E E T M A X I M U M

NOTE : USE OF THE OFFICE REPEATER IS OPTIONAL DEPENDING

UPON THE DISTANCE TO THE FIRST T 1 REPEATER

* 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 2-22. DS1 connections—4311 Feet or More

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