Technical data

364 COMpact 3000 analog/ISDN/VoIP - Firmware Version 4.0 - Version of the Manual 03 02/11
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:
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
Euro
with the values 270 Ohm +
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.
100 ms to 1s: The PBX interrupts the voice circuit for 100 to 1000 milli-
seconds.