960 Stewart Drive Sunnyvale, CA 94085 USA Phone +1.408.331.3300 +1.877.80SHORE Fax +1.408.331.3333 www.ShoreTel.com
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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 Polycom
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 Polycom to be in control of the session timer refresh.
Switch Settings
When allocating Ports for SIP extensions, these changes are modified by selecting “Administration,”
then “Switches” in ShoreWare Director (Figure 4).
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