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MCC7500 GPOIM Query

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pforbes

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Joined
Jul 27, 2009
Messages
50
Location
Toronto, Ontario
On the GPOIM, the Phone Jack has pin 1 & 2 and 7 & 8 shown as Aux In A/B- and +, respectively.

Can anyone let me know if either, or which, can be utilized as an Off-Hook input so as to feed the analog telephone handset Tx and Rx audio to the Operators Headset and push the Radio Rx to the Unselect Speaker?

We're going to be getting MCC7500's in a while and there's conflicting information being floated about.
 
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norcaljpa

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Joined
Sep 6, 2011
Messages
12
Pin 7 is available for off-hook. Pin 2 is available for jack-sense. Pins 1 and 8 are a common ground. Some combination of phone systems and MCC7500 are polarity sensitive for these connections.
 
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pforbes

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Joined
Jul 27, 2009
Messages
50
Location
Toronto, Ontario
Thank you very much. That settles that item. New item: I just learned that the GPOIM I was looking into will not be what we'll be getting. The GPOIM is the first generation CIE for the MCC7500 but the VPM is the latest flavour. All I could find was the old manual. Now looking to get my hands on a more recent one, if I can.
 
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