Peg M,
There is an easy way and then there's the correct way
I'm assuming that you have Anveo on sp2. If you have GV on sp1, then it's likely that you are sending 933 to GV, which it does not like! If you dial **2933, then after a long wait (10 seconds or so) 933 should be sent out to Anveo. However, this does not really replicate how 911 is sent to Anveo, so it's not a very good test.
To do a real test you need to make a few changes via the Obi Expert Configuration pages. From your OBi Dashboard, click on your OBi number and follow the prompts to get there. To change a value uncheck both boxes to the right of the value and leave them unchecked. After changing the values on one page, press submit at the bottom of the page and wait a few minutes for the Obi to reboot. Then move on to the next page if required.
Find your way to Physical Interfaces > Phone Port 1 > DigitMap. Among lots of rules there will be a rule ...|911|... Add 933 so you have ...|911|933|...
Then move on to Physical Interfaces > Phone Port 1 > OutboundCallRoute. When you set up 911 on Anveo, this rule will have been added somewhere ...,{911:sp2},... Add 933 so you have ...,{911:sp2},{933:sp2},...
After a submit and waiting for reboot, you should now be able to dial 933 and it will be sent direct to Anveo on sp2 in the same way that 911 is sent.
Repeat the above for Phone Port 2 if you would also like to test from Phone Port 2.