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Table 21 Server > IP-PBX Global Setting (continued)
LABEL
Default SIP
Client
Registration
Expiration
RTP Port Range
Default Ring
Time
Codec G723.1
Disable
Personal AA
DNS SRV
Enable Session
Timer
Minimum SE
Session Expires
Apply
Reset
X2002 User's Guide
DESCRIPTION
The X2002 is a SIP registrar server. A SIP registrar server maintains a
database of SIP identity-to-IP address (or domain name) mapping. The
X2002 checks your username, password and realm when you register.
Enter the number of seconds SIP clients are registered with the X2002
before their registration record is deleted.
Make sure that the client SIP devices are configured to re-register at an
interval smaller than the time set in this field.
You can enter expiration times for SIP clients that use NAT as well as
those that do not.
When you make a VoIP call using SIP, the RTP (Real time Transport
Protocol) is used to handle voice data transfer.
Enter the listening port number(s) for RTP traffic or keep the default
values. Enter the port number at the beginning of the range in the first
field and enter the port number at the end of the range in the second
field.
Specify for how many seconds the X2002 sends a ringing tone to client
devices for incoming calls.
Select Enable to turn on support for G723.1 voice codec or select
Disable to turn off support for the G723.1 voice codec.
Note: This setting only takes effect after a system restart.
Select From external call to disable the X2002's Auto-Attendant
feature for calls received from outside the PBX-managed telephone
system.
Select From internal call to disable the X2002's Auto-Attendant
feature for calls received from within the PBX-managed telephone
system.
Select Enable to have the X2002 query your ISP's DNS server for a list
of any available SIP servers that it maintains. This is useful if your static
SIP server exeriences difficulties, making it hard for your IP phone
users to make SIP calls. Doing this, however, could impact the X2002's
performance.
Select Disable to turn off the DNS SRV query. This is the X2002's
default setting for this feature.
Select this to enable the session timer.
Enter the minimum time in seconds before an idle SIP connection
expires. You can enter a value between 90 and 1800.
Enter the duration in seconds before an idle SIP connection expires. You
can enter a value between 90 and 86400.
The value entered in this field must be greater than or equal to the
value entered in the Minimum SE field.
Click this to save your changes.
Click this to set every field in this screen to its last-saved value.
Chapter 6 Server
131
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