Grandstream Networks GXE502X - Manual (Page 18)

GXE502X User Manual 7/9/2008
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Version 03
o Inbound Call Answer: This field sets the destination to terminate all incoming calls
from the trunks listed. The call can be terminated into the Auto-Attendant (IVR),
direct extensions, hunting/ring groups or the conference bridges (pending).
o Session Keep Alive: This field allow users to enable or disable the usage of the
session timer. This is enabled by default to: Automatic/Session Timer. The session
timer enables SIP sessions to be periodically “refreshed” via a SIP request. When
enabled, before the session interval expires, the GXE502X will send a SIP re-
INVITE message to the SIP server. If there is no reply to this message the session
will be terminated. This will avoid stalled sessions occupying the channel/bandwidth.
o Session Expiration: The Session Expiration is the timer (in seconds) at which the
session is considered timed out if no successful session refresh transaction occurs
beforehand. The default value is 180 seconds. Incorrect configurations could cause
calls to be dropped Or suspended.
o Min-SE: The minimum session expiration (in seconds). The default value is 90
seconds.
o Allow Other IPPBX Use: This field lets users to allow other networked peer
GXE502X/IPPBX systems to use this trunk. The Default setting for this field is Yes.
Click the Submit button to add the trunk or Cancel to go back.
• Modify: Clicking on the Modify button to the right of the SIP trunk will load the SIP trunk
details page. This page is where users can modify all of the SIP trunk’s settings. When
done, click the Submit button to save all the changes or click Cancel to go back.
• Delete: Click the Delete button on the far right of the trunk status/details to delete the SIP
trunk. Users will be prompted for confirmation via a dialog box; click OK to confirm or
Cancel to go back.
4. Conference Bridge
The GXE502X supports 2 (GXE5024) or 4 (GXE5028) password protected conference bridges
that allow up to 12 (GXE5024) or 20 (GXE5028) simultaneous participants from PSTN trunks,
SIP trunks or Internal Extensions.
The Conference Bridge/Room numbers are configured automatically by GXE502X during the
Express Setup process. At the factory default settings the conference bridges do not have
password protection. Users can change the extension numbers of the bridges and set a
password to by selecting the Conference Bridge menu.
• Renaming the conference bridge extension numbers and passwords:
To rename an extension number on a conference bridge, enter the extension number
(please make sure the number is not currently in use by a local extension) into the
Extension field of a conference room. If you want to require users to enter a password
before they can enter the room, input a numeric password in the Password field. When
done, click the Submit button to save the changes. The changes will be written into the
Flash memory and will take effect the next time the GXE502X is rebooted.