AudioCodes Mediant 4000 SBC User Manual page 852

Parameter
Redundancy Mode
configure voip > sip-definition
settings > redundancy-mode
[ProxyRedundancyMode]
Proxy IP List Refresh Time
configure voip > sip-definition
settings > proxy-ip-lst-rfrsh-time
[ProxyIPListRefreshTime]
Always Use Proxy
configure voip > sip-definition
proxy-and-registration > always-
use-proxy
[AlwaysSendToProxy]
DNS Query Type
configure voip > sip-definition
settings > dns-query
[DNSQueryType]
User's Manual
table parameter, SIPGroupName as the host name in the To and
From headers. If the IP Group is configured with a Proxy Set that
has multiple IP addresses, all the REGISTER messages sent to
these proxies are sent with the same host name.
Note: If the parameter is disabled and the ProxyName parameter
is not configured, the proxy's IP address is used as the host name
in the REGISTER Request-URI.
Determines whether the device switches back to the primary
Proxy after using a redundant Proxy.

[0] Parking = (Default) The device continues working with a
redundant (now active) Proxy until the next failure, after which
it works with the next redundant Proxy.

[1] Homing = The device always tries to work with the primary
Proxy server (i.e., switches back to the primary Proxy
whenever it's available).
Note: To use this Proxy Redundancy mechanism, you need to
enable the keep-alive with Proxy option, by setting the parameter
EnableProxyKeepAlive to 1 or 2.
Defines the periodic rate (in seconds) at which the device
performs DNS queries to resolve FQDNs (host names) into IP
addresses. For example, if a Proxy Set is configured with an
FQDN and the parameter is configured to 60, the device queries
the DNS server every 60 seconds, which refreshes the Proxy
Set's list of DNS-resolved IP addresses.
The valid value is 0, or 5 to 2,000,000. The default is 60. The
value 0 disables periodic DNS queries and DNS resolution is
done only once - upon device reset, device power up, or new and
modified configuration.
Determines whether the device sends SIP messages and
responses through a Proxy server.

[0] Disable = (Default) Use standard SIP routing rules.

[1] Enable = All SIP messages and responses are sent to the
Proxy server.
Note: The parameter is applicable only if a Proxy server is used
(i.e., the parameter IsProxyUsed is set to 1).
Enables the use of DNS Naming Authority Pointer (NAPTR) and
Service Record (SRV) queries to resolve Proxy and Registrar
servers and to resolve all domain names that appear in the SIP
Contact and Record-Route headers.

[0] A-Record = (Default) No NAPTR or SRV queries are
performed.

[1] SRV = If the Proxy/Registrar IP address parameter,
Contact/Record-Route headers, or IP address configured in
the routing tables contain a domain name, an SRV query is
performed. The device uses the first host name received from
the SRV query. The device then performs a DNS A-record
query for the host name to locate an IP address.

[2] NAPTR = An NAPTR query is performed. If it is successful,
an SRV query is sent according to the information received in
the NAPTR response. If the NAPTR query fails, an SRV query
is performed according to the configured transport type.
852
Mediant 4000 SBC
Description
Document #: LTRT-40203