{

"resourceType": "CodeSystem",
"id": "subscription-channel-type",
"meta": {
  "lastUpdated": "2019-11-01T09:29:23.356+11:00"
},
"extension": [
  {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "fhir"
  },
  {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode": "trial-use"
  },
  {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 3
  }
],
"url": "http://hl7.org/fhir/subscription-channel-type",
"identifier": [
  {
    "system": "urn:ietf:rfc:3986",
    "value": "urn:oid:2.16.840.1.113883.4.642.4.501"
  }
],
"version": "4.0.1",
"name": "SubscriptionChannelType",
"title": "SubscriptionChannelType",
"status": "draft",
"experimental": false,
"date": "2019-11-01T09:29:23+11:00",
"publisher": "HL7 (FHIR Project)",
"contact": [
  {
    "telecom": [
      {
        "system": "url",
        "value": "http://hl7.org/fhir"
      },
      {
        "system": "email",
        "value": "fhir@lists.hl7.org"
      }
    ]
  }
],
"description": "The type of method used to execute a subscription.",
"caseSensitive": true,
"valueSet": "http://hl7.org/fhir/ValueSet/subscription-channel-type",
"content": "complete",
"concept": [
  {
    "code": "rest-hook",
    "display": "Rest Hook",
    "definition": "The channel is executed by making a post to the URI. If a payload is included, the URL is interpreted as the service base, and an update (PUT) is made."
  },
  {
    "code": "websocket",
    "display": "Websocket",
    "definition": "The channel is executed by sending a packet across a web socket connection maintained by the client. The URL identifies the websocket, and the client binds to this URL."
  },
  {
    "code": "email",
    "display": "Email",
    "definition": "The channel is executed by sending an email to the email addressed in the URI (which must be a mailto:)."
  },
  {
    "code": "sms",
    "display": "SMS",
    "definition": "The channel is executed by sending an SMS message to the phone number identified in the URL (tel:)."
  },
  {
    "code": "message",
    "display": "Message",
    "definition": "The channel is executed by sending a message (e.g. a Bundle with a MessageHeader resource etc.) to the application identified in the URI."
  }
]

}