Get a specific phone number

curl --request GET \
  --url https://api.us.poly.ai/v1/agents/{agentId}/telephony/phone-numbers/{phoneNumber} \
  --header 'x-api-key: <api-key>'

{
  "number": "<string>",
  "projectId": "<string>",
  "accountId": "<string>",
  "clientEnv": "<string>",
  "connectorId": "<string>"
}