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Chapter 1. Introduction
10 TSU 600 User Manual 61200.076L2-1
OPTION SLOT ARRANGEMENT
As viewed from the rear of the TSU 600, the slots are
numbered as shown in Figure 1-4. All slots are
functionally identical except slots one and six. These
slots offer additional functions.
Slot 1
Slot 1 is used as the source of DTE timing when the
DTE timing mode is selected. If DTE timing is de-
sired, the DTE interface port sourcing the timing must
be connected to Slot 1. This slot will accept all other
interface types except Secondary Network interface
option modules, including DSX-1 (PBX), the Full Drop
and Insert (D&I) network interface, or the Dial Backup
(DBU).
Slot 2
Slot 2 is used for the Dial Backup module if a DBU is
installed. This slot accepts all other interface types
except Secondary Network interface option modules,
including DSX-1 (PBX) and the Full Drop and Insert
(D&I) network interface.
Slots 3-5
Slots 3-5 will accept any interface type except second-
ary interface, the interface for DTE timing, or the DBU.
If other interfaces have any restriction on their loca-
tion, this will be specified in the individual option
card manual (provided with the option cards).