Specifications

Reference Guide
4-37
System Configuration and Operation CPU Switching
4.14 CPU Switching
The 5.2 host release provides CPU redundancy switching by pressing “
W
” (
cpusWtch
) from
the System Main Screen. The CPU redundancy switching is from a CPU in slot C1 to a
redundant CPU in slot C2. When this process takes place the CPU in slot C2 is now active and
the CPU in slot C1 is redundant. Refer to the CPU Card Redundancy section later in this
manual.
4.15 Time Slot Assignment
This section provides instructions for assigning DS0 time slots to the voice and data cards of
the Integrated Access System. It also provides time slot cross-connection and broadcast setup
instructions.
The Integrated Access System maximizes the use of incoming and outgoing T1 and/or E1
lines. You can do this by assigning specific channels, or
DS0 time slots
, to voice and data cards
in the system. You also can cross-connect time slots between T1 and/or E1 WAN ports of the
system.
The CPU Card allows you to connect one DS0 time slot to another. Throughout this chapter,
these connections are called "pass-through" circuits because they link a time slot from one T1
or E1 line to another through the system. You can therefore have up to eight separate T1 or E1
links on four WAN cards, in any cross-connect combination.
The following sections of this chapter describe several ways for you to administer your
networks and correctly allocate transmission bandwidth to meet your needs. The next section
deals with assigning time slots to the user voice and data card. The second section describes a
time-saving tool known as the
Configuration
option, which automatically assigns sequential
WAN time slots to the ports of user voice cards.
The third section deals with cross-connecting WAN time slots to other WAN time slots. The
fourth section addresses a special application that supports the ability to broadcast a data
signal over multiple WAN aggregates.
The fifth section describes signaling status, signaling, and companding conversion. The last
section shows you how to view the time slot map after making your assignments and
cross-connections.
This chapter defines "assigning time slots" as the process of connecting user card ports to
WAN ports and time slots, and it defines "cross-connecting time slots” as the process of
connecting WAN time slots to other WAN time slots in the system.