3Com 3C10402B Administrator's Manual page 283

NBX 100 systems use a 3-digit dial plan, and V3000, V3001R, and V5000
systems use a 4-digit dial plan.
Table 54 lists typical extension ranges by type.
ranges in more detail.
Table 54 Typical Extension Ranges by Type
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 V3000, V3001R, and the V5000 systems are shipped with a factory
default 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.
Note 2: The NBX 100 system 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 3: TAPI Route Point extensions occur in the same range as telephones. TAPI
Route Point extensions do not appear in telephone lists within the NBX NetSet utility.
For more information about TAPI Route Points, see
page 351.
Note 4: An extension cannot begin with a zero.
Table 55 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)
4-digit
1000–3999
500, 501, plus 5500–5599
4000–4099
6000–7999
(external Auto Discovery
starts at 7250)
6000–6099
3-digit
100–449
500–599
450–499
600–799
(external Auto Discovery
starts at 750)
Managing Extensions
Table 56 describes these
"TAPI Route Points" on
4-digit
1000–3999
500, 501, plus 5500–5599
4000–4099
6000–7999
(external Auto Discovery
starts at 7250)
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