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2.5.4 Trunk Call Features
2.22.1.1 Station Message Detail Recording (SMDR)
5.1.1 Class of Service (COS)
Operating Manual References
1.2.1 Basic Calling
2.5.4.4 Dial Type Selection
Description
The dialling mode (rotary or tone) can be selected for each analogue trunk through system programming
regardless of the originating extension (under contract with the telephone company).
There are the following modes:
Mode
DTMF (Dual Tone Multi-
Frequency)
Pulse Dial (Rotary)
Conditions
•
Pulse to Tone Conversion
It is possible for an extension user to temporarily switch from Pulse mode to DTMF mode so that the user
can access special services such as computer-accessed long distance calling or voice mail services. To
switch to DTMF mode, wait for a preprogrammed time period (Default: five seconds) after the trunk is
connected, or press
changed to Pulse mode.
•
It is possible to select the pulse rate for a trunk port that has been set to Pulse mode. There are two pulse
rates: Low (10 pps) and High (20 pps).
•
It is possible to assign the minimum duration of the DTMF signal sent to a trunk port that has been set to
DTMF mode.
PC Programming Manual References
9.24 PBX Configuration—[1-1] Configuration—Slot—Port Property - LCO Port
→ Dialling Mode
→ DTMF Width
→ Pulse Speed
2.5.4.5 Reverse Circuit
Description
A circuit in the PBX can detect the reverse signal from the telephone company when an extension user tries
to make a trunk call. This detects the start (a called party goes off-hook) and end (the called party goes on-
hook) of an outgoing trunk call. When a trunk call is received, the circuit can also detect the reverse signal
after an outside caller goes on-hook.
If Reverse Circuit Detection is disabled, the total duration of the call is not accurately recognised by the
PBX. The duration of a call can be verified on SMDR using this feature (→ 2.22.1.1 Station Message Detail
Recording (SMDR)).
It is possible to select whether the PBX detects the reverse signal for outgoing trunk calls only, or for both
outgoing and incoming trunk calls, or for no trunk calls (detection disabled) through system programming.
88
Feature Manual
The dialling signal from an extension is converted to tone dialling.
DTMF signals are transmitted to the trunk.
The dialling signal from an extension is converted to rotary dialling.
Rotary pulses are transmitted to the trunk.
. This feature works only on trunks set to Pulse mode. DTMF mode cannot be
Description
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