Lucent Technologies Release 8.2 Manual Do Utilizador
DCS over IP Trunk
439
Administration for Network Connectivity
555-233-504 — Issue 1 — April 2000
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.
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:
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Instructions
As an example, let’s administer PSTN Fallback for trunk group 80, which is already
set up.
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.
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:
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.