Cisco 3521, Руководство администратора

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Administrator’s Guide for Cisco IPVC 3521 BRI Gateway, Cisco IPVC 3526 PRI Gateway, and Cisco IPVC 3540 PRI Gateway
OL-7995-01
Chapter 3 Configuring the Cisco IPVC 3500 Series Gateway
Configuring Gateway Settings
Octet 3.1 Octet 3.1 is used to hold Numbering Plan
Identification (NPI) and Type of Network (TON)
values. The octet contains eight bits numbered
from 1 to 8 and from right to left, so that Bit 1 is
rightmost and Bit 8 is leftmost.
The bits contain binary values representing the
following functions:
•
Bits 1-4 = NPI
•
Bits 5-7 = TON
•
Bit 8 is always set to 1 when Octet 3.1 is used
and populated.
Note The Numbering Plan Identification (NPI)
and Type of Network (TON) fields appear
in the Add ISDN Information Elements
dialog box
The standard NPI values are:
•
For an NPI setting of Unknown, the standard
integer value is 0 and the standard binary
value is 0.
•
For an NPI setting of ISDN/Public, the
standard integer value is 1 and the standard
binary value is 0001.
•
For an NPI setting of Private, the standard
integer value is 9 and the standard binary
value is 1001.
The standard TON values are:
•
For a TON setting of unknown, the standard
integer value is 0 and the standard binary
value is 0.
• For a TON setting of International, the
standard integer value is 1 and the standard
binary value is 0001.
•
For a TON setting of National, the standard
integer value is 2 and the standard binary
value is 0010.
•
For a TON setting of Network, the standard
integer value is 3 and the standard binary
value is 0011.
•
For a TON setting of Local, the standard
integer value is 4 and the standard binary
value is 0100.
Table 3-12 Octet Field Functions
Octet Function