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COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-17
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• When an IXC facility is chosen and the caller dialed an AT&T number. In this case, ARS can be used
to insert an IXC prefix.
• When an AT&T facility is chosen and the caller dialed an IXC number. In this case, ARS can be used
to delete the IXC prefix. (Generic 1 only.)
• When the call is being routed through other private switches that do not have networking software. In
this case, ARS can be used to prefix the called number with the dial access code (DAC) of the trunk
group it wants the next switch to use to route the call.
• When the call is toll call and the chosen facility expects a prefix of 1. In this case, ARS can be used to
insert a prefix of 1.
Modifying the digits in ARS is not done automatically. Digit modification is administered for each routing
pattern preference. The administration tells the system how many digits to delete and insert before sending
the call to its destination.
NETWORK ADMINISTRATION
It is important to know which terminals and systems you can use to administer the network, given the type
and version of communications system you are administering. Table 2-4 tells you which administration
terminals and systems are compatible with given communications systems. Note that, even though a
terminal or system can administer a given communications system, all the network administration
procedures and screens may not be available through it. Refer to the terminal or system documentation to
determine which administrative tasks it can perform. (See appendix A, Related Documents, for the names
and numbers of this documentation.)
In addition to using these systems and terminals for network administration, you may opt to contract for
network administration through the QualNet Enhanced Support Program centers or through
ACCUMASTER Management Services.
PRIVATE NETWORK TRUNKS
To determine the types of trunks you can use to connect your private network, refer to the Trunking section
in chapter 1 of this manual. There you will also find recommendations for the administration for each trunk
type.
NETWORKING FEATURE PARAMETERS
The following table lists several parameters associated with certain network features of the AT&T private
switching systems.