AudioCodes MediaPack 114 Manual de usuario Pagina 122

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SIP User's Manual 122 Document #: LTRT-65411
MediaPack Series
Parameter Description
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
NAPTR/SRV queries aren't performed, even if ProxyDNSQueryType is
set to 1 or 2.
Transport Type The transport type per 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 (refer to ''SIP General Parameters'' on page 101).
Proxy Load Balancing
Method
[ProxyLoadBalancin
gMethod]
Enables the Proxy Load Balancing mechanism per Proxy Set ID.
[0] Disable = Load Balancing is disabled (default).
[1] Round Robin = Round Robin.
[2] Random Weights = Random Weights.
When the Round Robin algorithm is used, a list of all possible Proxy IP
addresses is compiled. This list includes all IP addresses per Proxy Set, after
necessary DNS resolutions (including NAPTR and SRV, if configured). After
this list is compiled, the Proxy Keep-Alive mechanism (according to
parameters EnableProxyKeepAlive and ProxyKeepAliveTime) tags each
entry as 'offline' or 'online'. Load balancing is only performed on Proxy
servers that are tagged as 'online'.
All outgoing messages are equally distributed across the list of IP addresses.
REGISTER messages are also distributed unless a RegistrarIP is
configured.
The IP addresses list is refreshed according to ProxyIPListRefreshTime. If a
change in the order of the entries in the list occurs, all load statistics are
erased and balancing starts over again.
When the Random Weights algorithm is used, the outgoing requests are not
distributed equally among the Proxies. The weights are received from the
DNS server by using SRV records. The device sends the requests in such a
fashion that each Proxy receives a percentage of the requests according to
its' assigned weight. A single FQDN should be configured as a Proxy IP
address. The Random Weights Load Balancing is not used in the following
scenarios:
The Proxy Set includes more than one Proxy IP address.
The only Proxy defined is an IP address and not an FQDN.
SRV is not enabled (DNSQueryType).
The SRV response includes several records with a different Priority value.
Enable Proxy Keep
Alive
[EnableProxyKeepA
live]
Determines whether Keep-Alive with the Proxy is enabled or disabled. This
parameter is configured per Proxy Set.
[0] Disable = Disable (default).
[1] Using OPTIONS = Enables Keep-Alive with Proxy using OPTIONS.
[2] Using REGISTER = Enable Keep-Alive with Proxy using REGISTER.
If set to 'Using OPTIONS', the SIP OPTIONS message is sent every user-
defined interval, as configured by the parameter ProxyKeepAliveTime. If set
to 'Using REGISTER', the SIP REGISTER message is sent every user-
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