Matrix Visionpro System Manual

Matrix VISIONPRO System Manual 84
AC Impedance Test
VISIONPRO supports the AC Impedance Test to achieve clear, audible and echo-free speech over the CO Trunks.
This test helps you to set the most appropriate values for the following CO Trunk parameters,
• AC Termination Impedance (or, AC Impedance)
• CO Termination
• CO Line Type
The test helps to correct the line impedance mismatch between the AC Termination Impedance presented by the
CO port of VISIONPRO to the line and the CO Termination Impedance presented by the Central Office (CO) to the
line.
Conducting the AC Impedance Test
You can conduct the AC Impedance Test of a specific CO trunk port by placing an outgoing call to a pre-defined
number using that CO port.
Before you conduct the AC Impedance Test, make sure you have the following,
• a telephone instrument with a valid number. You are recommended to use a mobile handset having the
Mute function. Also, make sure that you can answer the call from the telephone/mobile handset you will
use for the test.
• the CO trunk which you want to test.
At a time, you can conduct the test for a single CO trunk port only.
You can conduct the test after you have set the relevant test parameters. To do this,
• Enter SE mode from an SLT connected to the system.
• To select the Test Mode, dial,
3136-Index
Where,
The Recommended Test Mode is Reliable.
The Reliable Test Mode suggests the AC Impedance settings on the basis of most commonly used AC
Impedances, CO Terminations and CO Line Types across the globe. The test using Reliable Test Mode
takes approximately 5 minutes to complete.
The Accurate Test Mode suggests the AC Impedance settings on the basis of all the possible AC
Impedances, CO Terminations and CO Line Types across the globe. The test using the Accurate Test
Index Test Mode
0 Reliable
1 Accurate

Matrix Visionpro Specifications

General

Brand	Matrix
Model	Visionpro
Category	PBX
Language	English