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Programming
INTER-TEL
®
AXXESS
®
MANUAL VERSION 11.0 – May 2008
BRI Card Configuration
PROGRAMMING
6
Overlap Sending
3.120 If using a PRI-equipped card with PRI Net 5 and BRI Net 3 switch types, you can pro-
gram the system to use the overlap sending and receiving protocols. These protocols allow you
to program the switch to send called number digits either in the setup message or the informa-
tion message. To access the programming options, double-click Overlap Sending. You then
have the following options:
• Immediate Overlap Sending: With this flag enabled, the system does not collect the
Called Number digits on non-Automatic Route Selection (ARS) calls before sending a
setup message to the network provider. Instead, the system will send each digits as it is
dialed in subsequent information messages (one message per digit) until the network
has received enough digits to route the call. Disabling this flag allows the system to col-
lect the Caller Number digits for ALL calls (ARS and non-ARS type calls). After all
digits are collected, the system sends the Called Number digits based on the program-
mable “Overlap Sending Condition.” This flag should be enabled in order for the sys-
tem to seize a B-channel immediately or if the network provider is to provide
immediate feedback for invalid numbers. This flag should be disabled if the network
provider does not support overlap receiving. By default, this flag is disabled.
NOTE: Because ARS calls require the phone system to collect digits before determin-
ing the most cost-effective route, this flag is ignored for ARS calls.
• Maximum Digits in Called Number IE: Select the maximum number of Called Num-
ber digits that the system will include in the setup and/or information messages. This
field may be required if the network provider only allows calls with a specified number
of maximum digits. The number of digits programmed here and the Overlap Sending
Conditions value determine the number of Called Number digits sent in the Called
Number information elements (IEs) for setup and information messages. The valid
range is 1 - 48, and the default is 20.
NOTE: If the Immediate Overlap Sending flag is enabled, this field is ignored.
• Overlap Receiving: Enable this flag if the network provider does not send digits “en
bloc” to the phone system. If enabled, the system will not route the call until it has
received a sending complete indication from the network provider or until the Overlap
Receiving Timeout Timer has expired (see below). You should enable this flag if the
network provider sends any Called Number digits in subsequent information messages.
You should disable this flag if the network provider sends all of the Called Number dig-
its in the setup message (“en bloc”). By default, this is disabled.
• Overlap Receiving Timeout Timer: Select the number of seconds that the system will
wait to receive any Called Number digits from the network provider. You may need to
adjust this value if the network provider does not send a sending complete indication to
signal the end of the Called Number digits. The valid range is 1 - 255, and the default is
30 seconds.
• Overlap Sending Conditions: Select how the system will send digits if the Immediate
Overlap Sending flag is disabled. Whether or not the overlap sending protocol is used
depends on the value selected here. You have the following options:
— Overlap Sending Disabled: Sends all digits “en bloc” as part of the Called Num-
ber IE in the setup message. This option does not allow overlap sending.
— Overflow Is Equal Access Only: Sends any overflow digits as equal access digits
in the setup message. This option does not allow overlap sending. This is the
default setting.
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