Avaya DEFINITY ONE Installation And Upgrades page 145

Installation and Upgrades for DEFINITY ONE and
IP600 Internet Protocol Release 10 555-233-109
1 Install and Cable the Cabinet
Install and wire telephones and other equipment
DS1 tie trunks using T1 channel service unit
Figure 1-52
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 Avaya 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)
Figure 1-52. Typical connections to channel service unit
shows a DS1 tie trunk connected to an external T1 Channel Service
5. Ring (R)
6. Tip 1 (T1)
7. Ring1 (R1)
8. 1.544 Mbps T1 interface
9. To T1 carrier
Issue 6
December 2001
1-105