Configuring Line Impedance - Auerswald COMpact 3000 analog Installation, Operation And Configuration Instructions

Configuring and Managing the PBX
Analog Connection

Configuring Line Impedance

4. In the Flash time list field under General info, select one of the following options:
100 ms to 1 s: The PBX interrupts the voice circuit for 100 to 1000 milli-
seconds.
Note:
In order to use service attributes provided by the network provider, such
as callback on busy (CCBS), a longer flash time is usually necessary
(e.g., 170-300 ms; in Germany, a flash time of 300 ms is normal).
A flash time that is set too long could be interpreted by the central office as
a hang-up of the receiver.
Further steps:
– Save your settings before you leave the page.
Configuring Line Impedance
The impedance indicates which values are required to enable the best speech quality on the
lines.
Note:
In German PBX models, the impedance Z
750 Ohm || 150 nF is specified.
Incorrect settings can cause echoing effects.
The configuration can be made as follows:
• Via the configuration manager
Requirements:
– External analog port (only COMpact 3000 analog)
– Configuration manager, opened with sufficient authorization
– Expert view (click
– Configured prefixes (country prefix and local area code)
1. Open the page CONFIGURATION > External numbers.
364
)
COMpact 3000 analog/ISDN/VoIP - Firmware Version 4.0 - Version of the Manual 03 02/11
with the values 270 Ohm +
Euro