Parameters only for the ISDN BRI cards, that will be adjusted at the driver configuration files used for that cards - misdn (Figure 7.90):
- Echo cancel: The default is
High. Other options: Disabled, minimum, low and maximum (requires more CPU processing);
- DTMF detection threshold: Permit to change the DTMF sensibility from 50 to 400 (less sensibility);
- Disable DTMF on voice audio: This option disables DTMF detection of voice audio on calls from BRI Cards. By default, this option is set to
NO
- Immediate digit capture: The immediate capture of digits changes the way how the numbers sent from a PBX central are read in IPBrick. When this option is deactivated, the routine capture of digits is changed to solve problems in the reading of numbers in some central stations, for example, when the dialled number is wrongly identified in IPBrick (repeated digits or lack of digits). Attention: This option should be placed
No by default;
- PSTN digit reception timeout: Timeout in seconds;
- Jitter Buffer: Permit the change of Jitter Buffer7.15;
- Digit timeout: Time (seconds) from the dialling of the last number from which IPBrick considers the dialling as ended;
- Response timeout: Time (seconds) counted from the moment the receiver is hung up and at its end IPBrick shall cancel the channel;
- Type of Number (ISDN TON): Low level signalling options
- Outgoing number (onumplan): Unknown is the default, other options are national, international and subscriber;
- Caller id (dnumplan): Unknown is the default, other options are national, international and subscriber;
- CPN (cpnnumplan): Unknown is the default, other options are national, international and subscriber.
- Prefixes based on ISDN TON: This option is related to the card's call reception, in such a way that, if you receive a PSTN incoming call, with an international or national type of number, the corresponding prefix will be added to the incoming numbers. This feature is important to facilitate the call redial function. At BRI card options you will also be able to set the country code;
- CLIP no screening: Available only in some countries, such as Germany and Austria, this option permits you to mask your Caller ID number with a number out of bounds of its assigned number space. By default, this option is set to
NO
Figure 7.90:
Telephony - ISDN BRI options
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Footnotes
- ... Buffer7.15
- Shared data area where voice packets can be collected, stored, and sent to the VoIP server in evenly spaced intervals
IPBRICK
