Aastra Telecom 41-001343-02 IP Phone User Manual


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Global SIP Settings
41-001343-02 REV04 – 05.2014 4-73
17. In the "Registration Renewal Timer" field, enter the threshold value, in seconds, prior to expiration, that the phone renews registrations.
The phone will automatically send registration renewals half-way through the registration period, unless half-way is more than the threshold
value.
For example, if the threshold value is set to 60 seconds and if the registration period is 600 seconds, the renewal REGISTER message will be
sent 60 seconds prior to the expiration, as half-way (600/2) > 60. If the registration period was 100 seconds, then the renewal would be sent
at the half-way point as (100/2) < 60.
Valid values are 0 to 2147483647. Default is 15.
18. The “BLF Subscription Period” field is enabled by default with a value of 3600 seconds.
This feature sets the duration, in seconds, before the BLF subscription times out. The phone re-subscribes to the BLF subscription service
before the defined subscription period ends.
Note:
This parameter is not applicable to BLF/List subscriptions.
For information about setting the “BLF Subscription Period”, see Chapter 5, the section,“BLF Subscription Period” on page5-137.
19. (For Sylantro Servers) The “ACD Subscription Period” field is enabled by default with a value of 3600 seconds.
This feature sets the time period, in seconds, that the IP phone re-subscribes the BLF subscription service after a software/firmware upgrade
or after a reboot of the IP phone.
For information about setting the “ACD Subscription Period”, see Chapter 5, the section, “ACD Subscription Period” on page5-150.
20. The “BLA Subscription Period” field is enabled by default with a value of 300 seconds.
This feature sets the amount of time, in seconds, that the phone waits to receive a BLA subscribe message from the server. If you specify zero
(0), the phone uses the value specified for the BLA expiration in the subscribe message received from the server. If no value is specified, the
phone uses the default value of 300 seconds.
For information about setting the “BLA Subscription Period”, see Chapter 5, the section, “BLA Subscription Period” on page5-170.
21. (For Broadsoft Servers) The “Blacklist Duration” field is enabled by default with a value of 300 seconds (5 minutes). Valid values are 0 to
9999999.
This feature specifies the length of time, in seconds, that a failed server remains on the server blacklist. The IP phone avoids sending a SIP
message to a failed server (if another server is available) for this amount of time.
Note:
The value of “0” disables the blacklist feature.
For information about setting the “Blacklist Duration”, see Chapter 6, the section, “Blacklist Duration” on page6-13.
22. In the “Park Pickup Config” field, enter the appropriate value based on the server in your network.
Notes:
• For values to enter in this field, see the table “Park/Pickup Call Server Configuration Values” on page5-182.
• Leave the park/pickup configuration field blank to disable the park and pickup feature.
23. Enable the "Whitelist Proxy" field by checking the check box.
(Disabl
e this field by unchecking the check box. Default is disabled).
When this feature is enabled, an IP phone accepts call requests from a trusted proxy server only. The IP phone rejects any call requests from
an untrusted proxy server.
For information about setting the “Whitelist Proxy”, see Chapter 6, the section, “Whitelist Proxy” on page6-15.
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