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Chapter 27 Global PBX Settings
ISG50 User’s Guide
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27.3 The Feature Code Screen
Use this screen to set values for the feature codes the ISG50 supports from an IP phone’s
extension. Users can dial these codes to enable or disable the features listed below for their
extension settings by entering these codes on their phone’s keypad. Click Configuration > PBX >
Global > Feature Code to open the screen as shown.
Figure 279 Configuration > PBX > Global > Feature Code
Enable Personal
AA
Select From external call to enable the ISG50’s auto-attendant feature for calls received
from outside the PBX-managed telephone system.
Select From internal call to enable the ISG50’s auto-attendant feature for calls received
from within the PBX-managed telephone system.
Enable Session
Timer
Select this to enable the session timer.
Minimum Session
Expiration
Enter the minimum time in seconds before an idle SIP connection expires. You can enter a
value between 90 and 1800.
Session Expires
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.
Enable RTCP
Support
Select this to have the ISG50 use RTCP (RTP Control Protocol) as an optional signalling
protocol for SIP traffic.
Enable DNS SRV
Select this to have the ISG50 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 experiences difficulties,
making it hard for your IP phone users to make SIP calls. Doing this, however, could
impact the ISG50’s performance.
Apply
Click this to save your changes.
Reset Click this to set every field in this screen to its last-saved value.
Table 141 Configuration > PBX > Global > SIP Server (continued)
LABEL DESCRIPTION