Specifications

CONTENTS
1–3
or 64 lines in a single cabinet system. With-
out the T1 card, the maximum number of lines
in the basic KSU is 56.
TWO CABINET SYSTEM
When it is required that the basic system be
expanded to provide a capacity greater than
that described above, the Expansion A or A1
card must be installed in slot seven of the
KSU. This card provides the High-Speed Digi-
tal Link (HDL) pathways that are used to con-
nect the expansion cabinets to the basic KSU.
Adding this card therefore reduces the num-
ber of universal card slots in the basic KSU
to six.
Adding one expansion cabinet makes the
system a two cabinet system with 13 univer-
sal card slots (see Figure 1–2). This allows a
maximum of 80 stations or 112 lines when
using a T1 card. Without the T1 card, the
maximum number of lines is 104 while the
maximum number of stations remains at 80.