AudioCodes Mediant 500 E-SBC, User Manual

Page: 276 / 920

User's Manual 276 Document #: LTRT-10437
Mediant 500 E-SBC
Parameter Description
Proxy Name
CLI: proxy-name
[ProxySet_ProxyName]
Defines an arbitrary name to easily identify the Proxy Set.
The valid value is a string of up to 20 characters.
DNS Resolve Method
CLI: dns-resolve-method
[ProxySet_DNSResolveMeth
od]
Defines the DNS query record type for resolving the Proxy server's
host name into an IP address.

[-1] = DNS resolving is done according to the settings of the
global parameter, Proxy DNS Query Type.

[0] A-Record = (Default) A-record DNS query.

[1] SRV = If the Proxy address is configured with a domain name
without a port (e.g., domain.com), an SRV query is done. The
SRV query returns the host names (and their weights). The
device then performs DNS A-record queries per host name
(according to the received weights). If the configured Proxy
address contains a domain name with a port (e.g.,
domain.com:5080), the device performs a regular DNS A-record
query.

[2] NAPTR = NAPTR query is done. If successful, an SRV query
is sent according to the information received in the NAPTR
response. If the NAPTR query fails, an SRV query is done
according to the configured transport type. If the configured Proxy
address contains a domain name with a port (e.g.,
domain.com:5080), the device performs a regular DNS A-record
query. If the transport type is configured for the Proxy address, a
NAPTR query is not performed.
Note: An SRV query can return up to four host names. For each host
name, the subsequent DNS A-record query can be resolved into up
to 15 IP addresses. However, the device supports up to 30 DNS-
resolved IP addresses. If the device receives more than this number
of DNS-resolved IP addresses, the device uses the first 30 IP
addresses in the received list, and ignores the rest.
Web/EMS: Enable Proxy
Keep Alive
CLI: voip-network proxy-set >
proxy-enable-keep-alive
[ProxySet_EnableProxyKee
pAlive]
Enables the device's Proxy Keep-Alive mechanism, which checks
communication with the Proxy server.

[0] Disable (default).

[1] Using Options = Enables the Proxy Keep-Alive mechanism
using SIP OPTIONS messages. The device sends these
messages every user-defined interval, configured by the 'Proxy
Keep Alive Time' parameter. If the device receives a SIP
response code that is also configured in the 'Keep-Alive Failure
Responses' parameter (below), the device considers the Proxy as
down. 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).

[2] Using Register = Enables the Proxy Keep-Alive mechanism
using SIP REGISTER messages. The device sends the
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).
If you enable Proxy Keep-Alive mechanism, the device can operate
with multiple Proxy servers (addresses) for redundancy and load
balancing (configured by the 'Proxy Load Balancing Method'