First cut at an operations run book

docs/infra-overview.md

@@ -100,6 +100,8 @@ TODO: create env vars for these origin and destination email addresses for the r
 
 #### Move SNS out of sandbox.
 
+This should be complete for all regions U.S. Notify has been deployed to or is currently planned to be deployed to.
+
 1. Visit the SNS console for the region you will be sending from. Notes:
     1. SNS settings are per-region, so each environment must have its own region
     1. Pinpoint and SNS have confusing regional availability, so ensure both are available before submitting any requests.
@@ -115,10 +117,8 @@ TODO: create env vars for these origin and destination email addresses for the r
 1. Select `Toll-free registrations` and `Create registration`
 1. Select the number you just created and then `Register existing toll-free number`
 1. Complete and submit the form. Approval usually takes about 2 weeks.
-1. Set this phone number as the `AWS_US_TOLL_FREE_NUMBER` in the environment you are creating
+1. See the run book for information on how to set those numbers.
 
-#### Current Production Phone Numbers
+Example answers for toll-free registration form
 
-* +18447952263 - in use as default number. Notify's OTP messages and trial service messages are sent from this number
-* +18447891134 - to be used by Pilot Partner 1
-* +18888402596 - to be used by Pilot Partner 2
+![example answers for toll-free registration form](./toll-free-registration.png)