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Figure 3 – Call Control/Options Screen
If this is an upgrade from previous ShoreTel versions, you may see a parameter named "Always Use
Port 5004 for RTP" If so, you will need to disable this parameter by un-checking the box and saving the
setting. When enabled, SIP extension configuration will fail. It is also important to note that this "one
time" setting requires a system restart (all servers first, then ShoreGear switches followed by IP
Phones) to take effect. Once the server has been restarted, this configuration parameter will no longer
be visible, or may be grayed out. The default for new installations is disabled, thus the parameter is not
visible (as shown in Figure 3).
Realm: The realm is used in authenticating all SIP devices. It is typically a description of the computer
or system being accessed. Changing this value will require reboot of switches serving as SIP
extensions. It is not necessary to modify this parameter to get the solution functional.
SIP session interval: Session interval value indicates the session (call) "keep alive" period. There is no
need to modify the default value of 3600 seconds.
SIP session refresher: The refresher setting decides if user agent client or user agent server refreshes
the session. Again, there is no need to modify the default value of "Caller (UAC)." This allows to be
in control of the session timer refresh.
Switch Settings - Allocating Ports for SIP Extensions
When allocating Ports for SIP extensions, these changes are modified by selecting "Administration" then
"Voice Switches / Service Appliances..." followed by "Primary" in ShoreWare Director (Figure 4).
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