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Specifications
INTER-TEL
®
AXXESS
®
MANUAL VERSION 11.0 – May 2008
Optional Modem Data Port Module (MDPM)
SPECIFICATIONS
2
5.28 The data device can be used by the associated Executive Display, Professional Display,
Standard Display, Associate Display, Model 8520, or Model 8560 Phone(s) to communicate
with remote data equipment over voice channels being used for CO [local exchange] or inter-
com calls. See pages 3-201 and 5-269 for installation and operation instructions.
NOTE: Each “equipped” MDPM installed counts as one single-line device.
5.29 The MDPM ring signal waveform has the following characteristics:
• 20 Hz
• 200 volts peak-to-peak
• 48% duty cycle
• No DC offset (superimposed on circuit ground)
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