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VoIP Subscriber Gateways
Profile:
-
Profile name
– username of configurable profile;
-
Activate profile
– when checked, the profile is active otherwise it is passive;
SIP configuration:
-
Proxy mode
– the device has provided redundancy mechanism of SIP-proxy server (and
registration server) since firmware version 1.8.0 thereby you may work through the
redundant servers if connection with the main server was lost. You may select one of
three SIP server operation modes in the dropdown list:
Disable;
Parking – SIP-proxy redundancy mode without main SIP-proxy management;
Homing – SIP-proxy redundancy mode with main SIP-proxy management.
The gateway may operate with a single main SIP-proxy and up to four redundant SIP-
proxies. For exclusive operations with the main SIP-proxy, 'Parking' and 'Homing'
modes are identical. In this case, if the main SIP-proxy fails, it will take time to restore
its operational status.
For operations with redundant SIP-proxies,
'Parking'
and
'Homing'
modes will work as
follows: the gateway sends INVITE message to the main SIP-proxy address when
performing outgoing call,
and REGISTER message when performing registration
attempt.
If on expiration of
'Invite total timeout'
there is no response from the main
SIP-proxy or response 408 (when 'changeover by timeout' option is enabled) or 503 is
received, the gateway sends INVITE
(or REGISTER)
message to the first redundant SIP-
proxy address. If it is not available, the request is forwarded to the next redundant SIP-
proxy and so forth. When available redundant SIP-proxy if found, registration will be
renewed on that SIP-proxy.
Next, the following actions will be available depending on the selected redundancy
mode:
1.
In the 'parking' mode, the main SIP-proxy management is absent, and the gateway will
continue operation with the redundant SIP-proxy even when the main proxy operation
is restored. If the connection to the current SIP-proxy is lost, querying of the subsequent
SIP-proxies will be continued using the algorithm described above. If the last redundant
SIP-proxy is not available, the querying will continue in a cycle, beginning from the main
SIP-proxy.
2.
In the 'homing' mode, three types of the main SIP-proxy management are available:
periodic transmission of OPTIONS messages to its address, periodic transmission of
REGISTER messages to its address, or transmission of INVITE request when performing