SIP User's Manual  202  Document #: LTRT-83310 
  Mediant 600 & Mediant 1000 
Parameter  Description 
 
To the Trunk Group's Serving IP Group ID, as defined in the Trunk 
Group Settings table. 
  According to the Outbound IP Routing Table if the parameter 
PreferRouteTable is set to 1. 
  To the default Proxy. 
Typically, when IP Groups are used, there is no need to use the 
default Proxy, and all routing and registration rules can be configured 
using IP Groups and the Account tables (see 'Configuring Account 
Table' on page 225). 
Proxy Address 
[ProxyIp_IpAddress] 
The IP address (and optionally port number) of the Proxy server. Up to 
five IP addresses can be configured per Proxy Set. Enter the IP 
address as an FQDN or in dotted-decimal notation (e.g., 201.10.8.1). 
You can also specify the selected port in the format: <IP 
address>:<port>. 
If you enable Proxy Redundancy (by setting the parameter 
EnableProxyKeepAlive to 1 or 2), the device can operate with multiple 
Proxy servers. If there is no response from the first (primary) Proxy 
defined in the list, the device attempts to communicate with the other 
(redundant) Proxies in the list. When a redundant Proxy is located, the 
device either continues operating with it until the next failure occurs or 
reverts to the primary Proxy (refer to the parameter 
ProxyRedundancyMode). If none of the Proxy servers respond, the 
device goes over the list again. 
The device also provides real-time switching (Hot-Swap mode) 
between the primary and redundant proxies (refer to the parameter 
IsProxyHotSwap). If the first Proxy doesn't respond to the INVITE 
message, the same INVITE message is immediately sent to the next 
Proxy in the list. The same logic applies to REGISTER messages (if 
RegistrarIP is not defined).  
Notes: 
  If EnableProxyKeepAlive is set to 1 or 2, the device monitors the 
connection with the Proxies by using keep-alive messages 
(OPTIONS or 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 
[ProxyIp_TransportType] 
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 (see 'Configuring SIP General 
Parameters' on page 223).  
Web/EMS: Enable Proxy 
Keep Alive 
[ProxySet_EnableProxyKe
epAlive] 
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 SIP 
OPTIONS messages. 
 
[2] Using Register = Enables Keep-Alive with Proxy using SIP