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Programming
INTER-TEL
®
AXXESS
®
MANUAL VERSION 11.0 – May 2008
T1, T1/PRI, or E1/PRI Card Configuration and Programming
PROGRAMMING
6
Overlap Sending
3.89 (E1/PRI or BRI Only) If using a PRI-equipped card with PRI Net 5 and BRI Net 3
switch types, you can program 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 information message. To access the programming options, double-click
Overlap Sending. You then have the following options:
• Immediate Overlap Sending: Enable this flag to have the system immediately send
the setup message to the network provider. If disabled, all called number digits are col-
lected before sending the setup message to the network provider. You should enable this
flag if you want the system to seize a B-channel immediately or if you want the net-
work provider to provide immediate feedback for invalid numbers. You should disable
this flag if the network provider does not support overlap receiving. By default, this flag
is disabled.
NOTE: Because Automatic Route Selection (ARS) calls require the phone system to
collect digits before determining 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 num-
ber 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 digits
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 number
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.
— Overflow Digits Sent In Overlap: Sends any overflow digits in subsequent infor-
mation messages. This option allows overlap sending.
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