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Quadro4Li Manual II: Administrator's Guide
Administrator’s Menus
Quadro4Li; (SW Version 5.2.x)
69
The
ISDN Wizard - ISDN Low Level Settings
page offers a
Power Source
selection option. When this option is selected,
the QuadroISDN device will act as a power supply for the ISDN
phones connected to it. Otherwise when this checkbox is not
selected, ISDN phones should have their own power supplies.
Please Note:
This checkbox should be always disabled when
the ISDN gateway has a PBX or Telecom connected.
Fig. II-125: ISDN Wizard – ISDN Low Level Settings
The
ISDN Wizard
– L2&L3 Settings
is used for advanced configuration only and contains L2&L3 Settings. This page only appears when the
Advanced Settings
checkbox is selected on the previous page of the wizard. This page contains the following components:
ISDN L2 Timers:
•
Excessive Ack. Delay T200
configures the period in milliseconds (numeric values from 500 to 9999) between the transmitted signaling packet
and its acknowledgement received.
•
Idle Timer
T203
configures the period in milliseconds (numeric values from 1000 to 99999) for the ISDN client idle timeout.
ISDN L3 Timers:
•
The
T302 Timer
text field requires the value for the T302
timer in milliseconds (digit values from 0 to 15000). It
indicates that the time frame system is waiting for a digit to
be dialed. When the timer expires, it initiates the call.
•
T309 Timer
requires the value for the T309 timer in
milliseconds (numeric values from 0 to 90000). It is
responsible for call steadiness during link disconnection
within the period equal to this timer value. If the value in
this field is zero (0), the T309 timer will be disabled.
•
T310 Timer
requires the value for the T310 timer in
milliseconds (numeric values from 1000 to 120000). It is
responsible for the outgoing call steadiness when CALL
PROCEEDING is already received from the destination but
call confirmation (ALERT, CONNECT, DISC or
PROGRESS) has not yet arrived.
•
Alert Guard Timeout
requires the value for the Alert
Guard Timer in milliseconds (numeric values from 0 to 500)
between CALL PROC and ALERT messages. Alert Guard
Timer it is used when Quadro is connected to a slow ISDN-
PBX.
Recommended values are:
- fast connection (0ms);
- normal (150ms), default;
- slow ISDN-PBX (350ms);
- very slow ISDN-PBX (500ms).
Fig. II-126: ISDN Wizard – L2&L3 Settings
The
Coding Type
drop down list allows you to select between
a-law
and
mu-law
coding types.
The
Switch Type
is another configuration parameter that depends on the Service Provider.
The
Passive Mode
checkbox is used to leave the ISDN Layer1 connection in the Slave mode. When this checkbox is selected, Layer1 remains idle
when calls are not available. When this checkbox is not selected, Quadro keeps its Layer1 always active. This checkbox enables the
Enable TEI
Remove Procedure
and
Permanent TEI Value
checkboxes. With the
Enable TEI Remove Procedure
checkbox is selected, the trunk will lose the
assigned TEI when entering into passive mode on the Layer 2. With the
Permanent TEI Value
checkbox is selected, the trunk will keep the assigned
TEI when entering into passive mode on the Layer 2 or when Quadro detected ISDN link DOWN signal from carrier.
Please Note:
The
Passive Mode
,
Enable
TEI Remove Procedure
and
Permanent TEI Value
checkboxes are present only for connection types
different from PTP (Point to Point) selected on the first page of ISDN Wizard. If PTP (Point to Point) connection type is selected on the first page of
the ISDN Wizard, these three checkboxes are replaced with a
TEI Address
text field that requires the channel number (digit values from 0 to 63) for
connection establishment between the CO and the ISDN client.