LifeSize Gateway-PRI, Руководство пользователя

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118 LifeSize Gateway User Guide
Configuring Port Settings
Figure 3-5 Network Specific Facility Information Element Format
NSF Information Elements contain a number of configurable Octet fields. The
values entered in these fields represent instructions contained in outgoing Q.931
Setup messages.
Figure 3-5 represents the format of such instructions.
Table 3-22 describes the function of each of the Octet fields.
Table 3-22 Octet Field Functions
Octet Function
Octet 3 Octet 3 represents the total number of Octet 3.X fields required for the
specific information element, including the Octet 3 field itself.
Network Specific Facilities
Information Element identifier
Length of network specific facilities contents
Length of network identification
1
ext
0
spare
Parameterized/
Binary
0
spare
Type of network identification Network identification plan
Network Identification (IA5 characters)
1
Exp
Feature/
Service
8 7 6 5 4 3 2 1
0 1 0 0 0 0 0 0
Facility coding value
Parameterized Field
Octet 1
Octet 2
Octet 3
Octet 3.1
Octet 3.2
Octet 4
Octet 5