Technical data

Table Of Contents
374 COMpact 3000 analog/ISDN/VoIP - Firmware Version 4.0 - Version of the Manual 03 02/11
Configuring and Managing the PBX
Analog Connection
Switching Line Polarity Reversal Detection for Start of Call On/Off
4. Select or clear the Busy tone detection check box under Start of call (outgoing
calls).
Further steps:
Save your settings before you leave the page.
Switching Line Polarity Reversal Detection for Start of Call On/Off
If line polarity reversal detection is enabled, the PBX network provider detects the polarity
reversal as a signal for routing the voice path.
Switching this on/off can be done as follows:
Via the configuration manager
Requirements:
External analog port (only COMpact 3000 analog)
Line polarity reversal support at start of call by the network provider
Configuration manager, opened with sufficient authorization
Expert view (click )
Configured prefixes (country prefix and local area code)
1. Open the page CONFIGURATION > External numbers.
2. In the list field at the top, select the analog connection.
A page opens for configuring the analog connection.
3. Open the page Analogue connection > Expert configuration.
4. Select or clear the Polarity reversal of the line check box under Start of call
(outgoing calls).
Further steps:
Save your settings before you leave the page.
Enables busy tone detection.
Disables busy tone detection.
Enables line polarity reversal detection.
Disables line polarity reversal detection.