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Anonymous
Not applicable

Was trying to connect a Polycom VVX Expansion Module with a ADTRAN VVX400 phone set. Added the module (1) and selected the type (LCD), then connected the AUX cable between the devices, the phone rebooted, the expansion module LED lights lite up, but then nothing.

Is there a compatibility issue ADTRAN VVX phones and the Polycom Expansion Module??m

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tn22
New Contributor III

I had to upgrade the firmware on the phone to 4.1.6 that  I was connecting the expansion module to.

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tn22
New Contributor III

I had to upgrade the firmware on the phone to 4.1.6 that  I was connecting the expansion module to.

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Anonymous
Not applicable

Were you using the LCD or Paper Expansion Module?  I can't find any reference from ADTRAN about the LCD being compatible.

tn22
New Contributor III

We are using LCD expansion module.