b. From the 'Use user=phone in SIP URL' drop-down list, select No. This instructs
the Gateway application not to use user=phone in the SIP URL and therefore,
REGISTER and INVITE messages use SIP URI. (By default, REGISTER
messages are sent with sip uri and INVITE messages with tel uri.)
Figure 27-5: Disabling user=phone in SIP URL
c. Click Submit.
27.4.2 Gateway with SAS Redundant Mode
The procedure below describes how to configure the Gateway application with SAS
redundant mode.
 To configure Gateway application with SAS redundant mode:
1. Define the proxy servers for the Gateway application:
a. Open the Proxy & Registration page (Configuration tab > VoIP menu > SIP
Definitions submenu > Proxy & Registration).
b. From the 'Use Default Proxy' drop-down list, select Yes.
Figure 27-6: Enabling Proxy Server for Gateway Application
c. Click Submit.
d. Open the Proxy Sets Table page (Configuration tab > VoIP menu > Control
Network submenu > Proxy Sets Table).
e. From the 'Proxy Set ID' drop-down list, select 0.
f. In the first 'Proxy Address' field, enter the IP address of the external proxy server.
g. In the second 'Proxy Address' field, enter the IP address and port of the device (in
the format x.x.x.x:port). This is the same port as defined in the 'SAS Local
UDP/TCP/TLS Port' field (see 'Configuring Common SAS Parameters' on page
297).
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