Line Number: Default = 0, Range = 1 to 249.
Enter the line number that you wish. Note that this must be unique.
Used to remember the telephone number of this line. For information only.
Incoming Group ID and Outgoing Group ID: Default = 0, Range 0 to 99999.
One group can contain multiple lines. Short Codes and Incoming Call Routes use this number to indicate which line they use.
Prefix: Default = Blank.
On Incoming Calls the ISDN messaging tags the incoming call source location as either National or International (see their respective prefixes above). This determines the addition of the relevant 0 or 00 respectively (0 is default for National and 00 is default for International). If the ISDN message flags the call source as unknown, then the number in the Prefix field is added to the ICLID.
In Outgoing Calls when a number is presented to the Line whose programming includes a Prefix number and the prefix number is present in the dialed digits, it is stripped prior to being sent out on the line.
National Prefix: Default = 0
This indicates the digits to be prefixed to a incoming national call. When a number is presented from ISDN as a "national number" this prefix is added. For example 7325551234" is converted to 17325551234".
International Prefix: Default = 00
This indicates the digits to be prefixed to an incoming international call. When a number is presented from ISDN as an "international number" this prefix is added. For example 441923000000 is converted to 001441923000000.
Number of Channels: Default = 20, Range 0 to 60.
Defines the number of operational channels that are available on this line.
Outgoing Channels: Default = 20, Range 0 to 60.
This defines the number of channels available, on this line, for outgoing calls. This should normally be the same as Number of Channels field, but can be reduced to ensure incoming calls cannot be blocked by outgoing calls.
Data Channels: Default = 20, Range 0 to 60.
The number of channels available for data use. If left blank the value is 0.
Voice Channels: Default = 20, Range 0 to 60.
The number of channels available for voice use.
TEI: Default = 0, Range = 0 to 127.
The Terminal Equipment Identifier. Used to identify each Control Unit connected to a particular ISDN line. For Point to Point lines this is typically (always) 0. It can also be 0 on a Point to Multi-Point line, however if multiple devices are actually sharing a Point to Multi-Point line it should be set to 127 which will result in the exchange deciding on the TEI's to be used by this Control Unit.