Signaling, Tones, and Transmission
Transmission Characteristics
The transmission characteristics of all country variants of the 3300 ICP and ancillary
subsystems comply with the specifications listed in Table 52, “Supported Transmission
Standards,” on page 80.
Compliances
Mitel digital telephones meet the requirements of:
• ANSI/TIA/EIA-810-A “Transmission Requirements for Narrowband Voice over IP and Voice
over PCM Digital Wireline Telephones”
In addition, the 3300 ICP meets all local specifications for each Mitel business region.
Line and Trunk Support Characteristics (North America)
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 kilometer 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.
• CO Trunk Loop - The system operates with CO Trunks up to a maximum of 1600 ohms
loop resistance.
• CO Trunk Seizure - The nominal seizure resistance
• for MX and AMB/AOB V1 trunks is 320 ohms at 20 mA
• for AMB/AOB v2/v3, ASU II and AX trunks 370 ohms at 20 mA
• CO Trunk Resistance - The on-hook DC input resistance of the LS trunks is not less than
5M ohms.
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