Panasonic KX-T336 System Reference Manual page 1224

(5) Mode Selection of Calls Arriving at ATT
When two attendant consoles are connected to the system, one of the
following three types of Incoming Mode can be selected.
Options 2 and 3 work only for the incoming outside call routed via a CO line
which belongs to the Trunk Group whose Incoming Mode (Day) is assigned
as "ATT."
(Parameters)
1. Load Sharing
Incoming outside calls are distributed evenly to two attendant consoles
so that they can share the same load. (default)
2. Simultaneous Ringing
An incoming outside call rings at two attendant consoles simultaneously.
3. Interconsole IRNA
If an incoming outside call ringing at one attendant console is not
answered within a specified time period (Attendant Overflow Time), it will
be automatically transferred to another attendant console automatically.
(6) Centrex ARS Mode
In ARS mode, not only a 7-digit or 10-digit number but a number equal to or
less than 6-digit (such as CENTREX feature access code) that follow the
ARS access code (default: 9) can be routed via an outside line.
A number equal to or less than 6-digit is routed via Local Trunk Dial Access
procedure after passing toll restriction process.
A 7-digit or 10-digit number is routed via ARS procedure after passing toll
restriction process.
(Parameters)
Y : A number equal to or less than 6-digit can be routed via an outside line
in ARS mode.
N : A number equal to or less than 6-digit can not be routed via an outside
line in ARS mode. (default)
(7) Waiting for Second Dial Tone Mode
In some area, upon completion of facility access code entry, the extension
user must ensure the reception of the second dial tone from the Central
Office before continuing to dial the telephone number.
(Parameters)
Y : The system waits for the second CO dial tone.
N : The system does not wait for the second CO dial tone. (default)
(8) Polarity Reversal Mode
With an R-LCOT card (KX-T96183), the system determines the start and
completion of calls by detecting a reversal of CO line polarity.
In some areas, however, CO doesn't send a reverse signal when a certain
type of special telephone number is dialed.
In this case, select "1. Special Mode."
When "1. Special Mode" (default) is selected, the system connects a speech
path when "External Interdigit Timer" (5 s - default) expires, or when it
detects a reversal of CO line polarity.
10-C-82-1
(70695)(E)