Filter
Top Products
DCS over IP Trunk
439
Administration for Network Connectivity
555-233-504 — Issue 1 — April 2000 CID: 77730
F IP Trunk Installation and
Administration
Rerouting calls when IP transmission quality is poor
When transmission quality over the IP network is unacceptable, use AAR or ARS
with Configuration Manager to reroute calls over private and public telephone
networks. This is called PSTN Fallback.
Before you start Before you perform this procedure, complete the following tasks:
• Plan call routing (page 419)
• Creating an IP trunk group (page 422)
• Starting IP Trunk service (page 432)
• Placing a test telephone call (page 448)
• Placing a test telephone call (page 448)
Instructions As an example, let’s administer PSTN Fallback for trunk group 80, which is already
set up.
To start PSTN Fallback, begin at the Windows NT desktop:
1 Double-click the Configuration Manager icon.
IP Trunk Configuration Manager appears.
2 Click the QoS tab.
The Quality of Service property page appears.
3 Select Line Pool (trunk group) 80.
4 Click Properties.
The Line Pool Properties dialog box appears.
5 Click Monitor and PSTN Fallback.
IP trunk will now monitor this trunk group and block access if either of the
service quality criteria are exceeded.
6 Click OK to close the Line Pool Properties dialog box.
7 If you want to change the default criteria used to measure service quality, change
the settings in the following fields on the QoS tab:
~ Sampling Interval (sec)
~ Samples to Average (number)
~ Packet Loss Threshold (%): Low
~ Packet Loss Threshold (%): High
~ Round Trip Delay Threshold (msec.): Low
~ Round Trip Delay Threshold (msec.): High
8 Click OK to save your changes and close Configuration Manager.