Vista 20P with AVS

[cgpsp]

Hello all,
 
I have a Vista 20P with the AVS board and GSM device for 2-way voice cellular monitoring.  My provider changed billing systems, and I accidentally got my account deactivated.  They no longer activate GSM devices, so I bought an LTE-XV.  On my GSM device, there was a 4-wire cable that went from the GSM to the AVS board to carry audio for 2-way voice.  My LTE-XV has no such cable.  How can I get back to cellular monitoring with 2-way voice?  Will the LTE-XV be able to do this?
 
Thank you!

 

[lanbrown]

http://library.ademconet.com/MWT/fs2/LTE-L3V/LTE-Radios-Family-Data-Sheet.PDF
 
 

Two-way Voice Transport Capable of allowing two-way voice session in conjunction with VoLTE (LYNX and LYRIC models only) an audio verification system (U.S. and Canada only).

 
The LTE-XV is not the LNYX or LYRIC model.

 

[cgpsp]

What device do I need to have LTE and 2-way voice on my Vista 20P?