Source Ip Group Classification - AudioCodes Mediant 800 MSBG User Manual

•
Source URL: if exists, obtained from the P-Asserted\Preferred-Identity header;
otherwise, from the From header
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Destination URL: obtained from the Request-URI
REGISTER dialogs:
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Source URL: obtained from the To header
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Destination URL: obtained from the Request-URI
8.4.3.2

Source IP Group Classification

The device supports the configuration of rules for classifying incoming SIP dialog initiating
request. The classification identifies the incoming SIP dialog request as belonging to a
specific IP Group (from where the SIP dialog request originated).
Classification begins with the device's Registration database, where it searches for a match
by checking if the request arrived from a registered user:
Compares received Contact to the Contact of the registered user
Compares P-Asserted/From URL to the registered AOR
If the database search is unsuccessful, the classification process proceeds with locating a
Proxy Set (associated with the SIP dialog request's IP address, or IP address, port, and
transport type if the ClassificationInput parameter is enabled in the Proxy Set) and then
finding a match with a corresponding IP Group in the IP Group table. Each IP Group can
be classified according to its Proxy Set (if in the IP Group table the parameter
ClassifyByProxySet is enabled). If enabled, the device classifies Requests arriving from the
IP Group's Proxy Set as coming from this IP Group. The classification is done according to
the Proxy IP list (in case of host names, then according to the dynamically resolved IP
address list). Note that this classification is not relevant in cases where multiple IP Groups
use the same Proxy Set.
If classification based on Proxy Set is unsuccessful, the device proceeds to the
Classification table, which searches for a source IP Group based on the following matching
rules: Source IP Address, Source Username Prefix, Source Host Prefix, Destination
Username Prefix, Destination Host Prefix, and Source SRD.
If the above classification process fails to determine the source IP Group to which the
incoming packet belongs, the call can either be rejected, or allowed and processed (by
assigning it to the default IP Group of the default SRD). This last classification is
determined by the parameter AllowUnclassifiedCalls.
This IP Group is afterwards used for the following purposes:
Input for the manipulation and routing processes
Defining SIP behavior and IP Profile, Media Realm and matching account
Note:
SIP User's Manual
Incoming REGISTER messages are recorded in the device's database and
sent to a destination only if they are associated with a source IP Group that is
of USER type.
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Mediant 800 MSBG
Document #: LTRT-12804