Processing moves left to right for both the inbound and outbound routes.
The 1st rule to match the dialed number will route the call.
You are already setup to route calls to SP1 without an **1 prefix.
Just dial the number.
{510222222>0:ph},{510222222>(@@.):sp1},{ph}
If you dial 18005551212
{510222222>0:ph} will not match the dialed number.
{510222222>(@@.):sp1} will match 18005551212 and route the call to SP1.
If you want to route calls to SP2 do this:
{510222222>0:ph},{510222222>(<**2:>@@.):sp2},{510222222>(@@.):sp1},{ph}
Then dial **218005551212
<**2:> will strip off the prefix before the number is sent to SP2.
Nothing needs to change in OBi#2. It will route any dialed string to OBi#1.
