DEFINITY Enterprise Communications Server Release 6

Issue 3

Installation and Test for Compact Modular Cabinets 555-230-128

May 1998

1 Install and Cable the Cabinets

 

Install and Wire Telephones and Other Equipment

Page 1-62

 

 

DS1 Tie Trunks Using T1 Channel Service Unit

Figure 1-30 shows a DS1 tie trunk connected to an external T1 Channel Service Unit (CSU). A 120A2 enhanced Integrated Channel Service Unit (ICSU) can be used in place of a T1 external CSU. The CSU or ICSU interfaces the DS1 tie trunks with the 1.544 Mbps digital facility. Contact your Lucent Technologies representative for maximum cabling distances.

Figure Notes

1.To DS1 tie trunk circuit pack

2.C6C cable (If distance is over 50 feet (15.24 m), use C6E cable.)

3.T1 external CSU or 120A2 ICSU

4.Tip (T)

5.Ring (R)

6.Tip 1(T1)

7.Ring1 (R1)

8.1.544 Mbps T1 interface

9.To T1 carrier

Figure 1-30. Typical Connections to Channel Service Unit

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Lucent Technologies 555-230-128 DS1 Tie Trunks Using T1 Channel Service Unit, Typical Connections to Channel Service Unit