Install and Wire Telephones
DS1 Tie Trunk Example
508 SI Installation and Upgrades
June 2004
DS1 Tie Trunk Example
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Digital Signal Level 1 (DS1) tie trunks provide a 1.544 Mbps (T1) or 2.048 Mbps (E1) digital data
service between two collocated systems or between the system and a data network.
See these examples:
• Collocated DS1 Tie Trunks on page 508
• DS1 Tie Trunks Using T1 Channel Service Unit on page 508
For cable descriptions, see
• DS1 Cables on page 509
• Pinout of C6F Cable on page 510
Collocated DS1 Tie Trunks
Two DS1 tie trunk circuit packs can be in collocated systems. A DS1 Tie Trunk circuit pack in one
system can be connected to a DS1 in another system. A C6D cable can be used if the distance is less than
50 feet (15.2 m). If the distance is between 50 feet (15.2 m) and 1310 feet (399 m), use a C6E cable.
NOTE:
The maximum distance between cabinets is 1310 feet (399.3 m).
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 Figure 197, Typical Connections to Channel Service Unit,
on
page 509.
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.
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