From the other thread, the KMS has an article:
https://mitel.custhelp.com/app/answers/answer_view/a_id/1001697/loc/en_US Title
Configure MiVB for use with Mitel TA7102i (Mediatrix 41XX Series) ATA
Objective
Configure MiVB for use with Mitel TA7102i (Mediatrix 41XX Series) ATA
Environment
MiVB
Mitel TA7102i (Mediatrix 41XX Series) ATA
Procedure
This document provides a reference to Mitel Authorized Solutions Providers for
configuring the MiVB to host the Mitel TA7102i (Mediatrix 41XX Series) Analog
Telephone Adapter (ATA). The different devices can be configured in various
configurations depending on your VoIP solution. This document covers a basic
Mitel TA7102i ATA setup as Endpoint gateway with required options setup and
explicitly excludes all Mitel TA7102i ATA setup as Trunk gateway testing.