Configuring Proxy Sets - AudioCodes E-SBC User Manual

CHAPTER 18 Core Entities
GW Group Status
'GW Group Registered IP Address'
'GW Group Registered Status'

Configuring Proxy Sets

The Proxy Sets table lets you configure up to 102 Proxy Sets. A Proxy Set defines the address (IP
address or FQDN) and transport type (e.g., UDP or TCP) of a SIP server (e.g., SIP proxy and SIP
registrar server). The Proxy Set represents the destination of the IP Group configuration entity.
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Multiple proxy servers enables you to implement proxy load balancing and redundancy. These
features are supported by the device's proxy keep-alive feature, which when enabled, sends keep-
alive messages (SIP OPTIONS) to all configured proxy servers to determine their connectivity
status (offline or online). You can also configure the device to consider the proxy as offline if
specific SIP response codes are received in response to the keep-alive messages. You can
configure the number of required consecutive successful keep-alive messages before the device
considers a previously offline proxy as online. This mechanism avoids the scenario in which the
device falsely detects a proxy as being online when it is actually offline, resulting in call routing
failure.
You can assign each Proxy Set a specific SSL/TLS certificate the (TLS Context), enabling you to
use different TLS certificates per SIP entity (IP Group).
You can also enable the device to classify incoming SBC SIP dialogs to IP Groups, based on
Proxy Set. If the source address of the incoming SIP dialog is the same as the address of a Proxy
Set, the device classifies the SIP dialog as belonging to the IP Group that is associated with the
Proxy Set.
Parameter
You can configure each Proxy Set with up to 10 proxy servers (rows) in the Proxy
Address table (a "child" of the Proxy Sets table), configured as IP addresses (in
dotted-decimal notation) and/or DNS hostnames (FQDN).
Each Proxy Set supports up to 15 DNS-resolved IP addresses.
Each Proxy Set supports up to 15 IP addresses, regardless of how the IP address
is obtained--DNS resolved or manually configured (dotted-decimal notation).
For all Proxy Sets together, the device supports up to 500 DNS-resolved IP
addresses. If the DNS resolution provides more than this number, it ignores the
extra addresses.
An SRV query sent by the device can return up to 50 hostnames. For each
hostname, the subsequent DNS A-record query sent by the device can resolve into
up to 50 IP addresses.
Mediant 1000 Gateway & E-SBC | User's Manual
Description
(Read-only field) Displays the IP address of the IP
Group entity (gateway) if registered with the device;
otherwise, the field is blank.
Note: The field is applicable only to Gateway-type IP
Groups (i.e., the 'Type' parameter is configured to
Gateway).
(Read-only field) Displays whether the IP Group entity
(gateway) is registered with the device ("Registered" or
"Not Registered").
Note: The field is applicable only to Gateway-type IP
Groups (i.e., the 'Type' parameter is configured to
Gateway).
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