Ls Trunk Specifications - Mitel 3300 ICP Hardware User's Manual

ONS Ringing Parameters (ASU)
Ringing
Voltage
Frequency
Trip Battery
Silent interval
Ring Interval
Number of bridged ringers
Max. bridged capacitance
Ring Trip detect time
SW ring trip response time
ONS Message Waiting Parameters (ASU)
Message Waiting
Voltage
Source Impedance
MSW trip
Flash Rate

LS Trunk Specifications

LS Trunk Features (3300 Universal ASU only)
Four Loop Start (LS) trunk circuits are supported by the 3300 Universal ASU with the following
features:
• Loop Start trunk capability only
• 50Hz meter pulse detection over a second T/R pair is supported on the UK variant
• Loop disconnect detection
• Loop reversal detection
• Incoming ringing detection
• Status led indicator per circuit
• Low level diagnostics
• Power Cross-protection as specified by CSA/UL 950 Safety Specifications
• Lightning Protection as specified by FCC Part 68/CS-03.
Parameters for NA/LA
65 Vrms sinewave superimposed
onto –48Vdc
20Hz
-30Vdc
-50Vdc
3
3uF//15kOhms
HW detector response <100ms
HW ring trip overrides application
of ringing signal
Within 50ms of switch hook detect
Parameters for NA/LA
-115Vdc +/- 5V dc
Between 2k and 4K
SW control, interlocks with
application of ringing
Cadenced, SW controlled. 300ms
on/1500ms off cont.
Release 3.3
Specifications
Parameters for UK/EU
65 Vrms sinewave superimposed
onto –48Vdc
25 Hz
-30Vdc
-50Vdc
3
3uF//15Kohms
HW detector response <100ms
HW ring trip overrides application
of ringing signal
Within 50ms of switch hook detect
Parameters for UK/EU
-115Vdc +/- 5V dc
Between 2k and 4K
SW control, interlocks with
application of ringing
Cadenced, SW controlled. 300ms
on/1500ms off cont.
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