3Com SuperStack 3 NBX Administrator's Manual page 56

56 C 2: D P
HAPTER IAL LAN
Table 8 lists typical extension ranges in a 3-digit and a 4-digit dial plan.
Table 9 describes these ranges in more detail and gives the default ranges
and values for 3-digit and 4-digit dial plans.
Table 8 Typical Extension Ranges for 3-digit and 4-digit Dial Plans
Extension Type
Telephones
Auto Attendant
Hunt Group
External Extensions
(includes line card
ports and Call Park)
Call Park (must fall
within External
Extension range)
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.
3-digit (See Notes 1 and 2)
NBX 100:
100–449
500–599
NBX 100: 450–499
(maximum of 30 groups)
600–799
(external Auto Discovery
starts at 750)
NBX 100:
601–609
4-digit (See Notes 1 and 2)
SuperStack 3 NBX:
1000–3999
500, 501, plus 5500–5599
SuperStack 3 NBX:
4000–4099
6000–7999
(external Auto Discovery
starts at 7250)
SuperStack 3 NBX:
6000–6099