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3300 ICP Hardware User Guide
10 Release 3.3
- dial the digit ‘1’ on an ordinary rotary telephone.
• Station switchhook flashes of less than the maximum programmed switchhook flash time
will not be repeated towards the central office.
• An open Tip lead condition of 500 ms (optional 100 ms) or more duration on a CO trunk
will release the system connection.
• Momentary open loop conditions of up to 350 ms (optional 100 ms) generated by the
central office on outgoing system calls will not release calls.
• Station on-hook conditions will release a trunk connection after the selected maximum
time.
Line and Trunk Support Characteristics (NA)
The North American variant of the system supports the following line and trunk parameters:
• Station Loop - The industry standard station loop range, including the station apparatus,
can be up to a maximum of 600 ohms (ONS Line).
• DNI Device Ranges - Any device which interfaces to a DNI line card has a loop length of
2 kilometers (6600 ft) with 24 (0.6mm) or 26 (0.45mm) AWG twisted pair cable with no
bridge taps, and one kilometre with a maximum of one bridge tap of any length. A maximum
of 50 m (162.5 ft) of 22 AWG (0.7mm) quad cable may also be used.
Time-Out Information
Feature Time-Out Period Description
No Answer Recall
Timer
0 - 125 s If there is no answer at the extension after
time-out expires, it will ringback at the attendant
console or transfer station.
Camp-On Recall Timer 0 - 180 s Incoming calls camped-on to a busy station
before being returned to the attendant, if not
answered before time-out expires.
Call Hold Timer 10 - 600 s Calls placed on hold ring back to the station user
upon expiry.
Attendant Busyout
Timer
1 - 1440 min System switches to night service if there is no
activity at the attendant console after calls are
received.
First Digit Timer 5 - 60 s This is the time the system will wait for the first
digit after going offhook at a station.
Interdigit Timer 3 - 60 s Time between dialed digits.
Delay Ring Timer 5 - 60 s Time before line rings on key set.
Callback Cancel Timer 1 - 24 hrs Time after which callback functions are reset and
cleared, or cancelled.
Call Forward - No
Answer Timer
0 - 125 s Length of time a station rings before the call is
forwarded or rerouted.
Switchhook Flash 60 - 1500 ms Length of time that a switchhook can be flashed
without dropping the trunk or line.
Ringing Timer 60 - 300 s The length of time a station rings another station
before the call is terminated.