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Chapter 1. Introduction
1-2
TSU ACE User Manual
61200295L1-20
Fractional T1
Fractional T1 (FT1) lets the buyer purchase less than a full T1 circuit
between two points. Most carriers offer fractional T1 in increments of
56 or 64 kbps. Connection is made to the same network elements. The
network allows multiple users to share the same interoffice T1 band-
width.
FT1 remains almost exclusively an inter-exchange carrier (IXC) ser-
vice. Local exchange carriers (LECs) typically do not offer FT1, so the
user’s proximity to the IXC’s point-of-presence (POP) is key in the sav-
ings that fractional T1 offers.
FT1 local access is available in two forms, 56 kbps or a full T1 line. In
56 kbps the required number of digital data service (DDS) lines is ex-
tended from the IXC POP and the bandwidth is combined at the office
on an outbound T1 circuit. The user pays for the individual 56K lines
and the amount of the interoffice T1 utilized. In T1 access, the user
pays for a full T1 to the IXC POP and then only for the bandwidth uti-
lized.
TSU ACE
OVERVIEW
This section provides a functional description of the TSU ACE, de-
scribes its features, and illustrates its four interfaces Figure 1-1 on page
1-3 shows the front view of the TSU ACE, and Figure 1-2 on page 1-4
shows the rear panel.
Functional Description
The ADTRAN TSU ACE is one of several T1 multiplexers that offer
complete flexibility for connection of various data sources to T1 or FT1
facilities. This family of TSU multiplexers includes the following:
•
TSU, TSU LT
, and
TSU ACE
-
T1 CSU/DSUs with a single
Nx56K/64K serial port.
•
TSU 100
- Same as the TSU with the added feature of a slot in the
Summary of Contents for TSU ACE
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Page 8: ...viii...
Page 16: ...xvi TSU ACE User Manual 61200295L1 20 List of Tables...
Page 28: ...Chapter 1 Introduction 1 12 TSU ACE User Manual 61200295L1 20...
Page 48: ...Chapter 4 Status Menu 4 6 TSU ACE User Manual 61200295L1 20...
Page 58: ...Chapter 5 Configuration Menu 5 10 TSU ACE User Manual 61200295L1 20...
Page 70: ...Chapter 7 Test Menu 7 8 TSU ACE User Manual 61200295L1 20...
Page 76: ...Chapter 8 Example Operations 8 6 TSU ACE User Manual 61200295L1 20...
Page 80: ...Appendix B DTE Data Rate Chart B 2 TSU ACE User Manual 61200295L1 20...
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