I am making progress. I signed up with
https://www.onsip.com/getonsip and obtain SIP accounts for my laptop, my phone, and my OBi200. On my phone, I am using the OnSIP Android app. I was able to make calls between my laptop and my phone - no issues with connecting, reasonable voice quality (my Internet is not the best). I even figured out how to call my OBi200 from my laptop/Android phone by adding 1555 in front of my Anveo
account@sip.anveo.com - the calls rang through to my second line that is plugged into the OBi200.
My goal is to get to the OBi Attendant from my SIP softphone so that I can enter a new number. I could probably figure out how to write routing rules based on the source ID of the caller. However, I decided to "keep it simple" and associate SP3 with the third OnSIP account that I had defined. Initial testing was promising: from my laptop, I could call the OBi200 OnSIP account and have it ring through to my second line. I updated the X_InboundCallRoute to specify AA rather than ph. Calling from my laptop, I was able to interact with the Obi Attendant and place a call via Anveo to multiple phone numbers.
When I called from my Android phone, I was able to get to the OBi Attendant and I could call through to my second line on the OBi200 by pressing '1'. I could get the OBi Attendant to request a new phone number by pressing '2', but the call got disconnected. Checking the OBi200 Call History, it appears the OBi Attendant never attempted to connect to the 'new call' number.
I thought it might be the OnSIP Android app and switched to ZoiPer, but this was even less successful - I could see the connection between my phone and the OBi200 via the OnSIP dashboard but never got the OBi Attendant voice prompts. On a few occasions, pressing '1' a few times caused line 2 to ring but I could not hear or be heard.
I will try to login to my Android phone SIP account from my laptop to narrow down if there might be difference between my primary SIP account (assigned to the laptop) and the secondary accounts (my phone and the OBi200. I will also dig into digit maps and call routing.
Regards, Norbert