Pstn failover when the tcp/ip network is down – AltiGen MAXCS 7.0 Update 1 ACM Administration User Manual
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Managing Domain Users
332
MaxCS 7.5 Administration Manual
Figure 191.
The User sub-tab
When a global extension is added to a member system, this extension can be propagated to other networked
systems in the VoIP domain automatically. This extension is recognized as a remote extension by other sys-
tems. When a call is made to a remote extension, it is redirected to the remote system over IP automatically.
Note:
No virtual extension configuration is needed to forward the call. The Enterprise VoIP domain uses the
User directory combined with the IP dialing table to resolve multi-site routing.
An extension can call a remote extension when invoking basic features such as an extension-to-extension call,
call transfer, conference, Zoomerang, and so on. Advanced features, such as silent monitoring and barge-in,
between sites are NOT supported.
PSTN Failover When the TCP/IP Network is Down
Enterprise call routing works with a SIP-tie trunk, but at times the TCP/IP network may be down. To provide
failover for these times, you can assign a PSTN number to each MAXCS in Enterprise Manager. The default
PSTN number is the main number of each MAXCS site.
To enable global extension rerouting,
1.
In Enterprise Manager click the Servers button, and then the Information tab.
2.
In the Global Extension Re-Routing panel, check Re-route outgoing calls when SIP tie-trunks are
unavailable
.
3.
Enter a PSTN number in the PSTN Number for Re-routed Incoming Calls field, if different from the main
number of the MAXCS site. If nothing is entered in this field, the main number of the MAXCS site is used.
If you enter a number, use the E.164 format.
When failover is needed, MAXCS dials the destination site number with the proper call prefix and area code
or country code. On the call destination site, the call comes into the AA. The AA receives the extension number
the call is directed to and rings the extension.
Note:
The rerouted call may hear 1 or 2 seconds of auto-attendant announcement before the call is sent to
the extension.