Page 5-289
System Features
INTER-TEL
®
AXXESS
®
MANUAL VERSION 11.0 – May 2008
Trunk Programming Using an Administrator’s Station
FEATURES
5
Trunk Programming Using an Administrator’s Station
52.34 The trunk information that can be programmed by an Administrator station includes the
following:
Individual trunks
• Answer Supervision Type: Answer supervision determines whether the system should
consider a call valid when it receives polarity reversal from the central office [network
provider] or wait for the Valid Call timer to expire. Any outside call put on hold
becomes valid immediately, regardless of Answer Supervision or Valid Call timer sta-
tus. There are three options available under answer supervision type:
— Polarity Reversal: A loop reversal must be received to consider the call valid.
When the first loop reversal is received, the call is made valid immediately, and
the phone display will begin call cost. When a second loop reversal is received,
the system will terminate the call.
NOTE: If a second loop reversal is not received, the system will not terminate the
call unless the inside party hangs up or loss-of-loop is received from the CO [net-
work provider].
— Valid Call Tim er: After the Valid Call Timer expires, the call is validated. All
polarity reversals received before and after the Valid Call Timer are ignored.
— Valid Call Timer with Polarity Reversal: If a loop reversal is received before the
Valid Call Timer expires, the call will be made valid immediately, and the phone
display will begin call cost. When a second loop reversal is received, the system
will terminate the call. If a loop reversal is not received before the Valid Call
Timer expires, the call will be made valid by the timer. If a loop reversal is
received after the timer expires, the loop reversal is ignored, but the call cost is
reset. If a second loop reversal is then received, the system will terminate the call.
NOTE: If a second loop reversal is not received, the system will not terminate the
call unless the inside party hangs up or loss-of-loop is received from the CO.
• Caller ID [CLIP]: When selected, the Caller ID [CLIP] option indicates that the asso-
ciated trunk will provide caller identification signals. This cannot be programmed
unless the Advanced CO Interfaces premium feature is licensed. See page 6-97. Caller
information features require DSP programming, described on page 6-117. Caller ID
[CLIP] uses Caller ID [CLIP] receivers.
• Hybrid Balance: Hybrid balance can be set to Normal or Short to allow the installer to
adjust the hybrid impedance of the trunk based on local central office conditions.
— Short: The short balance is used when trunks are supplied by other equipment
located within the same building, using private, copper wire termination, e.g., an
OPX supplied by another PBX that does not use the public network [a multiplexor
or host PBX in Europe], or when the site is located close to the central office
[local exchange].
— Normal: The normal balance can be used by most trunks.
Version 10.0 or later system allows you to test the trunk interface hybrid balance manu-
ally. Hybrid Balance Test is a tool that provides data and a recommendation you can use
to fine-tune the hybrid balance of individual analog loop start trunks connected to loop/
ground start trunk ports. See page 6-246 for details.
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