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Managing Extension Lists 59
Within an extension list, you can assign a priority to each extension.
When the system accesses an extension list, it tries to use the highest
priority extension first. The highest priority is 1 and the lowest is 99.
For example, If the extension list contains extensions that are assigned to
T1 channels, you can assign unique priorities to each of the extensions.
If you instruct the system to place an outgoing call using the T1 line,
it attempts to use the highest priority extension/channel first. If the first is
unavailable, it tries the next highest priority extension/channel, and so on.
Table 11 Extension Lists
Extension List ID Description
*0001 Contains extension numbers assigned to Line Card ports, for
example, TLIM ports.
Routes 1 and 2 use this list.
*0002 Contains extension numbers assigned to Digital Line Card ports.
Routes 1 and 2 use this list.
*0003 Contains extension numbers assigned to voice mail.
■ SuperStack 3 NBX: 6400–6499 (See Note 1)
■ NBX 100: 651-662 (See Note 2)
Route 3 uses this list.
*0004 Contains the extension for the attendant (that is, the person
who monitors incoming calls). The system automatically assigns
to this list the lowest extension found during Auto Discovery.
Route 4 uses this list.
*0005 Contains extension numbers assigned to H.323 ports.
*0006 Contains extension numbers assigned to Virtual Tie Lines.
*0008 Contains extension numbers assigned to the 8-pool.
Note 1: The NBX 100 is shipped with a factory default 3-digit dial plan. If you
import any 4-digit plan, you must manually specify any 4-digit extension ranges that
are not set by the imported plan. You must also manually change any device
extensions so that they fall within the appropriate range.
Note 2: The Superstack 3 NBX is shipped with a 4-digit dial plan. If you import any
3-digit plan, you must manually specify any 3-digit extension ranges that are not set
by the imported plan. You must also manually change any device extensions so that
they fall within the appropriate range.