3Com SuperStack 3 NBX, Руководство администратора

Страница: 38 / 496

38 C
HAPTER
2: D
IAL
P
LAN
Internal Dial
Plan Table
The Internal dial plan table (table ID 1) defines how to handle calls placed
from internal devices, such as NBX Business or Basic Telephones, to a
destination. A destination can be another internal device, such as a local
telephone, or an external telephone line (Analog Line Card or Digital Line
Card) that connects the NBX system to other facilities.
The Internal dial plan table consists of a series of commands. For an
example of the command format, see “Dial Plan Command Format”
earlier in this chapter. Table 6 earlier in this chapter describes each
element of the command. Table 7 describes the predefined routes.
You cannot delete or modify predefined routes, only create new routes.
Each device must have a Normal table. The Least Cost Routing table is
optional. Telephones use the Internal dial plan table (table ID 1) as their
normal outbound table and the Least Cost Routing table (table ID 3) as
their long distance routing table.
Incoming Dial
Plan Table
The Incoming dial plan table (table ID 2) defines how calls arriving from
outside the NBX system are routed to extensions. Incoming calls can
arrive on analog telephone lines or through Digital Line Card ports.
The incoming dial plan table consists of a series of commands. For an
example and basic understanding of the command format, see “Dial Plan
Command Format” later in this chapter. For a description of the each
element of a dial plan command, see Table 6 earlier in this chapter.
By default, Line Card ports, Digital Line Card ports, and H.323 gateways
use the Incoming dial plan table as their normal dial plan table. An
Incoming dial plan table typically has a more restricted list of dialable
digits than the Internal dial plan table. You usually cannot dial extensions
associated with internal paging or Analog or Digital Line Card ports.
Table 7 Predefined Routes
Route Number Description
1 Local CO (strip)
2 Local CO (no strip)
3 Voice Application (Auto Attendant on extension 500)
4 Attendant (person)
5 H.323 Gateway
6 Least Cost Route example
Other User-defined routes