AudioCodes MediaPack MP-112, Руководство пользователя

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User's Manual 458 Document #: LTRT-65417
MP-11x & MP-124
42.12.3 Action Subject
The Action Subject (message-element) syntax is described below:

Description: Element in the message

Syntax: (header / body ).message-element-name [.header -index ] * [.( sub -element /
sub-element-param )]

Examples:
•
header.from
•
header.via.2.host
•
header.contact.header-param.expires
•
header.to.uri-param.user-param
•
body.application/dtmf-relay
•
regex <(.*)( [3- 4] [0- 9])(.*)(\d)@(.*)>

message-element-name
•
Description: Name of the message's element - "/" only used for body types
•
Syntax: 1 * ( token / "/" )
•
Examples:
♦
from (header's name)
♦
to (header's name)
♦
application/dtmf-relay (body's name)
♦
<(.*)( [3- 4] [0- 9])(.*)(\d)@(.*)> (A regular expression)

header-index
•
Description: Header's index in the list of headers
•
Syntax: Integer
•
Examples: If five Via headers arrive:
♦
0 (default) refers to first Via header in message
♦
1 second Via header
♦
4 fifth Via header

sub-element
•
Description: Header's element
•
Syntax: sub-element-name
•
Examples:
♦
user
♦
host

sub-element-param
•
Description: Header's element
•
Syntax: sub-element-name [.sub -element-param-name ]
•
Example:
♦
header.from.param.expires

sub-element-param-name
•
Description: Header's parameter name - relevant only to parameter sub-
elements
•
Syntax: token
•
Examples:
♦
expires (contact's header's param)