ok, I Hope I did this right, for anybody like me... if someone wants to Save this, or, just delete.. its ok, but, drgeoff did aLot of work helping me, Thank you sir!
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If you still have the Obi110, there is an easy solution. Connect the 110 to the PSTN line, the fixed phone, your router and power it up. Configure it to fork incoming calls to both that fixed phone and to the OBi202. Incoming calls on the AT&T number will ring both phones and you can answer on either.
1. Plug the PSTN (wall/landline) into LINE jack on the Obi110.
2. Look on the underside of the OBi202 and take a note of the 9 digit OBi number. Or get its 9 digit number from the portal dashboard.
3. On the dashboard look at the line for the OBi110. Do you see 2 gearwheels? If yes proceed to step 4. If you see only one gearwheel, click on 'Edit Profile', scroll down to the bottom and tick the box for "Enable OBi Expert Entry from Dashboard". Click "Submit". Return to the dashboard.
4. On the line for OBi110, click the gearwheel containing a red E.
5. Click 'Physical Interfaces'. Click 'Line'.
6. Third line down, InboundCallRoute. Click as necessary on the two boxes at the end of that line until both are clear.
7. Replace whatever is in that entry box with
{ph,pp(ob123456789)} (fixed)
using the 9 digit number of your OBi202 instead of the 123456789
8. At the bottom of the page click 'Submit'. Wait for the OBi110 to automatically reboot.
9. Go back to the dashboard and delete any GV service(s) you have configured on the Obi110. They are not serving any useful purpose.
10. Test that calls to your AT&T number ring both phones and that you can answer on either.
But first do these checks:
1. From the 110's phone, dial **9 and the 9 digit OBi number of the 202.
2. From the 202's phone, dial **9 and the 9 digit number of the 110.
In each case the other phone should ring.
Ah yes, the AutoAttendant.
For each of the 202 and the 110 use the Expert mode to click on Voice Services, Obitalk Service. Change whatever is in InBoundCallRoute to
ph
Click Submit and wait for the reboot.
BTW if you want incoming GV calls to ring both phones then for each of the 202's Voice Services, SPx Service, X_InboundCallRoute, change to
{ph,pp(9 digit # of the 110)}
the end