Mitel 3300 - ASU II LS Trunk Parameters

Services Units and Gateways
87
ONS Ringing Parameters
ONS Message Waiting Parameters
ASU II LS Trunk Parameters
The ASU II LS Trunk parameters are the same as those for the Analog Boards. The parameters
for Analog Boards are detailed in the following tables:
• Table 19, “LS Trunk Signaling Protocols,” on page 50
• Table 20, “LS Trunk Specifications,” on page 51
• Table 21, “Attenuation Levels for Short and Long CO Trunks,” on page 51
• Table 22, “Recommended Trunk Lengths by Wire Size,” on page 52
• Table 25, “Australia: LS Trunk Impedance Values,” on page 53
• Table 27, “China: LS Trunk Impedance Values,” on page 54
• Table 28, “Europe: LS Trunk Impedance Values,” on page 54
• Table 29, “New Zealand: LS Trunk Impedance Values,” on page 55
• Table 30, “North America: LS Trunk Impedance Values,” on page 55
Table 61: Ringing Parameters
Ringing Parameters
Voltage 65 Vrms sine wave superimposed onto –48 Vdc
Frequency 20 Hz (NA/LA
1
)
25 Hz (UK
2
/EU
3
)
Trip Battery: Silent interval
Ring Interval
-30 Vdc
-50 Vdc
Number of bridged ringers 3
Max. bridged capacitance 3nF||15k ohms
Ring Trip detect time HW detector response <100 ms
HW ring trip overrides application of ringing signal
SW ring trip response time Within 50 ms of switch hook detect
1. The LA ASU is used in Latin America (excepting Brazil).
2. The UK ASU is used in the United Kingdom and New Zealand.
3. The EU ASU is used in Australia, France, German, Italy, Netherlands, Portugal, and Spain.
Table 62: Message Waiting Parameters
Message Waiting Parameters
Voltage -115 Vdc ± 5V dc
Source Impedance Between 2k and 4K
MSW trip SW control, interlocks with application of ringing
Flash Rate Cadenced, SW controlled. 300 ms on/1500 ms off cont.
AX and ASU II: hard-coded 500 ms on/1500 ms off