Mitel 3300 - ASU II Transmission Standards; Circuit Descriptions; On-Premise Station Lines

Hardware Technical Reference Manual
80
ASU II Transmission Standards
There is only one variant of the ASU II. Table 52 lists the transmission standards supported on
the ASU II. Table 19, “LS Trunk Signaling Protocols,” on page 50 lists the LS trunk signalling
protocols supported on the ASU II.
Circuit Descriptions
On-Premise Station Lines
Table 52: Supported Transmission Standards
Region Transmission Standards
North America (NA)
Latin America (LA)
TIA/EIA-912-A
ANSI/EIA/TIA 464-C
United Kingdom (UK) UK Subscriber/Subsidiary Loop
UK Loop Start Disconnect Clear
CTR-21
Europe (EU) CTR-21
ETSI ES 202 020 "Harmonized Pan-European American loss and level
plan for voice gateways to IP-based networks"
China YD-344-90
Brazil ANEXO Á RESOLUÇÃO # 390
Australia AS/ACIF S003:2001
S002/S003
New Zealand PTC220, PTC 109, PTC 207, PTC 217
Table 53: ONS Station Line Circuits by ASU type
Attribute ASU II
5
ASU
Battery Reversal
3
all regions UK, LA and EU only
Constant current 25 mA 25 mA
DC Leakage Resistance Immunity 10 kohm 10 kohm
Dial Pulse Detection No No
External Loop Drive Capability (Ringing
Range)
1200
2
ohm 600
1
ohm
Earth Recall detection No No
Ground Button detection No Yes
Ground Start detection No No
Loop Current limit 25 mA
6
25 mA
6
Loop Feed type constant constant
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