Log into Talkroute and click edit Virtual Phone Numbers

Under the forwarding settings (ring in sequence) add a new phone to ring

Name the phone number "Numa" and enter your Numa business number. You can find your Numa number by going to Settings > Phone Numbers in Numa.

In Talkroute, make sure the advanced settings are configured to "Show the Caller's Phone Number".

Talkroute requires a "keypress" for Numa to answer the call. Configure a keypress in your Numa Number's advanced settings. Settings > Phone Numbers > Numa Number > Advanced Options.