fromNumber. A phone number can belong to one pool at a time.
List pools
GET /v1/number-poolsCreate pool
POST /v1/number-poolsGet pool
GET /v1/number-pools/{id}Update pool
PATCH /v1/number-pools/{id}Delete pool
DELETE /v1/number-pools/{id}List members
GET /v1/number-pools/{id}/membersMove member
POST /v1/number-pools/{id}/members/moveValidate trunks
GET /v1/number-pools/{id}/validate-trunks