CHAPTER18 Core Entities
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
'Proxy Keep-Alive'
proxy-enable-
keep-alive
[ProxySet_
EnableProxyKeepAlive]
Enables the device's Proxy Keep-Alive feature, which checks
connectivity with all the proxy servers of the Proxy Set, by sending
keep-alive messages.
â– [0] Disable (default).
â– [1] Using OPTIONS = Enables the Proxy Keep-Alive feature
using SIP OPTIONS messages. The device sends an
OPTIONS message every user-defined interval, configured by
the 'Proxy Keep-Alive Time' parameter (in this table). If the
device receives a SIP response code that is configured in the
'Keep-Alive Failure Responses' parameter (in this table), the
device considers the proxy as offline. You can also configure
whether to use the device's IP address or string name
("gateway name") in the OPTIONS message (see the
UseGatewayNameForOptions parameter).
â– [2] Using REGISTER = Enables the Proxy Keep-Alive feature
using SIP REGISTER messages. The device sends a
REGISTER message every user-defined interval, configured
by the RegistrationTime parameter (Gateway application) or
SBCProxyRegistrationTime parameter (SBC application). Any
SIP response from the proxy - success (200 OK) or failure (4xx
response) - is considered as if the proxy is "alive". If the proxy
does not respond to INVITE messages sent by the device, the
proxy is considered as down (offline). The device sends keep-
alive REGISTER messages only to one proxy. Only if the proxy
fails to respond to the keep-alive, does the device send the next
keep-alive REGISTER message to another proxy.
Note:
â– Proxy keep-alive using REGISTER messages (Using
REGISTERoption) is applicable only to the Parking redundancy
mode ('Redundancy Mode' parameter configured to Parking).
â– If you enable this Proxy Keep-Alive feature, the device can
operate with multiple proxy servers (addresses) for redundancy
and load balancing (see the 'Proxy Load Balancing Method'
parameter).
â– For Survivability mode for User-type IP Groups, you must
enable this Proxy Keep-Alive feature.
â– If you enable this Proxy Keep-Alive feature and the proxy uses
the TCP/TLS transport type, you can enable CRLF Keep-Alive
feature, using the [UsePingPongKeepAlive] parameter.
â– If you enable proxy keep-alive using SIP OPTIONS messages
(Using OPTIONS), you can also enable the device to apply
various settings (e.g., SIP message manipulations) of the IP
Group that is associated with the Proxy Set , to these SIP
messages. For more information, see the 'Proxy Keep-Alive
using IP Group Settings' parameter in the IP Groups table.
'Proxy Keep-Alive Time'
proxy-keep-alive-
time
Defines the interval (in seconds) between keep-alive messages
sent by the device when the Proxy Keep-Alive feature is enabled
(see the 'Proxy Keep-Alive' parameter in this table).
The valid range is 5 to 2,000,000. The default is 60.
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