 According to the Tel to IP Routing if the parameter PreferRouteTable
is set to 1.
 To the default Proxy.
Typically, when IP Groups are used, there is no need to use the default
Proxy and all routing and registration rules can be configured using IP
Groups and the Account tables (see 'Configuring Account Table' on page
183).
Proxy Address
[ProxyIp_IpAddress]
Defines the address (and optionally, port number) of the Proxy server. Up
to five addresses can be configured per Proxy Set.
The address can be defined as an IP address in dotted-decimal notation
(e.g., 201.10.8.1) or as an FQDN. You can also specify the selected port
in the format, <IP
address>:<port>.
If you enable Proxy Redundancy (by setting the parameter
EnableProxyKeepAlive to 1 or 2), the device can operate with multiple
Proxy servers. If there is no response from the first (primary) Proxy
defined in the list, the device attempts to communicate with the other
(redundant) Proxies in the list. When a redundant Proxy is located, the
device either continues operating with it until the next failure occurs or
reverts to the primary Proxy (refer to the parameter
ProxyRedundancyMode). If none of the Proxy servers respond, the
device goes over the list again.
The device also provides real-time switching (Hot-Swap mode) between
the primary and redundant proxies (refer to the parameter
IsProxyHotSwap). If the first Proxy doesn't respond to the INVITE
message, the same INVITE message is immediately sent to the next
Proxy in the list. The same logic applies to REGISTER messages (if
RegistrarIP is not defined).
Notes:
 If EnableProxyKeepAlive is set to 1 or 2, the device monitors the
connection with the Proxies by using keep-alive messages (OPTIONS
or REGISTER).
 To use Proxy Redundancy, you must specify one or more redundant
Proxies.
 When a port number is specified (e.g., domain.com:5080), DNS
set to 1 or 2.
Transport Type
[ProxyIp_TransportTyp
e]
Defines the transport type of the proxy server.
 [0] UDP
 [1] TCP
 [2] TLS
 [-1] = Undefined
Note: If no transport type is selected, the value of the global parameter
SIPTransportType is used.
Web/EMS: Enable Proxy
Keep Alive
[ProxySet_EnableProxy
KeepAlive]
Enables the Keep-Alive mechanism with the Proxy server(s).
 [0] Disable (default).
 [1] Using Options = Enables Keep-Alive with Proxy using SIP
OPTIONS messages.
 [2] Using Register = Enables Keep-Alive with Proxy using SIP
REGISTER messages.
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