113
Installing the S8700 IP Connect
May 2002
DS1 Tie Trunks Using T1 Channel Service Unit
The T1 Channel Service Unit (CSU) interfaces the DS1 tie trunks with the 1.544 Mbps digital
facility.
Connect the DS1 tie trunk to a T1 CSU. See ‘‘Typical Connections to Channel Service Unit’’ on
page 113.
NOTE:
A 3150 CSU is shown, a 120A Integrated CSU (ICSU) may be used.
Contact your Avaya representative for maximum cabling distances for the 31xx series CSU or
the 120A ICSU.
Typical Connections to Channel Service Unit
Figure notes
1 Connector to DS1 Interface Circuit Pack
2 C6C Cable (For Distances Over 50 Feet
(15.24 m), Use C6E Cable(s))
3 T1 Channel Service Unit (CSU) 3150
Shown
4 T (Tip)
5 R (Ring)
6 T1 (Tip 1)
7 R1 (Ring 1)
8 1.544 Mbps Digital Service
Interface
9 To T1 Carrier
0012_1 RBP 062696
AUX PORT COM PORT M ODEM
DTE
NETWORK
POWER
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