diff --git a/package-lock.json b/package-lock.json
index b420236240e4..e00aebe18ded 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2543,6 +2543,11 @@
       "integrity": "sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==",
       "dev": true
     },
+    "autorest": {
+      "version": "3.6.3",
+      "resolved": "https://registry.npmjs.org/autorest/-/autorest-3.6.3.tgz",
+      "integrity": "sha512-j/Axwk9bniifTNtBLYVxfQZGQIGPKljFaCQCBWOiybVar2j3tkHP1btiC4a/t9pAJXY6IaFgWctoPM3G/Puhyg=="
+    },
     "balanced-match": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
diff --git a/package.json b/package.json
index c96a4693c2f4..673d44ce3027 100644
--- a/package.json
+++ b/package.json
@@ -41,5 +41,8 @@
     "prettier": "prettier",
     "tsc": "tsc",
     "multiapi": "ts-node ./scripts/multiapi.ts"
+  },
+  "dependencies": {
+    "autorest": "^3.6.3"
   }
 }
diff --git a/specification/communication/data-plane/Common/stable/2022-07-13/common.json b/specification/communication/data-plane/Common/stable/2022-07-13/common.json
index a5b3fd88c562..2d24910d6e8f 100644
--- a/specification/communication/data-plane/Common/stable/2022-07-13/common.json
+++ b/specification/communication/data-plane/Common/stable/2022-07-13/common.json
@@ -84,6 +84,30 @@
         "modelAsString": true
       }
     },
+    "CallingCommunicationIdentifierModel": {
+      "description": "Calling communication identifier model",
+      "allOf": [
+        {
+          "$ref": "#/definitions/CommunicationIdentifierModel"
+        }
+      ],
+      "properties": {
+        "unknownIdentifiers": {
+          "$ref": "#/definitions/UnknownIdentifierModel",
+          "description": "The unknown identifier."
+        }
+      }
+    },
+    "UnknownIdentifierModel": {
+      "description": "Unknown identifier identifier model",
+      "type": "object",
+      "properties": {
+        "id": {
+          "type": "string",
+          "description": "The unknown id."
+        }
+      }
+    },
     "CommunicationIdentifierModel": {
       "description": "Identifies a participant in Azure Communication services. A participant is, for example, a phone number or an Azure communication user. This model is polymorphic: Apart from kind and rawId, at most one further property may be set which must match the kind enum value.",
       "type": "object",
diff --git a/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/AzureCommunicationServices.json b/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/AzureCommunicationServices.json
index 4983a7f06344..f22f0fe4d35c 100644
--- a/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/AzureCommunicationServices.json
+++ b/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/AzureCommunicationServices.json
@@ -7,6 +7,32 @@
   },
   "paths": {},
   "definitions": {
+    "AcsIncomingCallEventData": {
+      "description": "Schema of the Data property of an EventGridEvent for an Microsoft.Communication.IncomingCall event",
+      "type": "object",
+      "properties": {
+        "to": {
+          "description": "The communication identifier of the target user.",
+          "$ref": "../../../../../communication/data-plane/Common/stable/2022-07-13/common.json#/definitions/CallingCommunicationIdentifierModel"
+        },
+        "from": {
+          "description": "The communication identifier of the user who initiated the call.",
+          "$ref": "../../../../../communication/data-plane/Common/stable/2022-07-13/common.json#/definitions/CallingCommunicationIdentifierModel"
+        },
+        "callerDisplayName": {
+          "description": "Display name of caller.",
+          "type": "string"
+        },
+        "incomingCallContext": {
+          "description": "Incoming call context & compact payload.",
+          "type": "string"
+        },
+        "correlationId": {
+          "description": "CorrelationId (CallId).",
+          "type": "string"
+        }
+      }
+    },
     "AcsUserDisconnectedEventData": {
       "description": "Schema of the Data property of an EventGridEvent for an Microsoft.Communication.UserDisconnected event.",
       "properties": {
diff --git a/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/examples/cloud-events-schema/incoming_call.json b/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/examples/cloud-events-schema/incoming_call.json
new file mode 100644
index 000000000000..f6023af310c0
--- /dev/null
+++ b/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/examples/cloud-events-schema/incoming_call.json
@@ -0,0 +1,26 @@
+{
+  "id": "81fa5460-7d8c-4fb7-bbb7-2d56154e78d9",
+  "topic": "/subscriptions/{subscription-id}/resourceGroups/{group-name}/providers/Microsoft.Communication/communicationServices/{communication-services-resource-name}",
+  "subject": "/call/{call-id}",
+  "data": {
+    "to": {
+      "rawId": "8:acs:5354158b-17b7-489c-9380-95d8821ff76b_0000000c-6c47-7dfd-6d70-224822000cfb",
+      "communicationUser": {
+        "id": "8:acs:5354158b-17b7-489c-9380-95d8821ff76b_0000000c-6c47-7dfd-6d70-224822000cfb"
+      }
+    },
+    "from": {
+      "rawId": "8:acs:0a420b29-555c-4f6b-841e-de8059893bb9_0000000c-6c47-7dfd-6d70-224822000cfb",
+      "communicationUser": {
+        "id": "8:acs:0a420b29-555c-4f6b-841e-de8059893bb9_0000000c-6c47-7dfd-6d70-224822000cfb"
+      }
+    },
+    "callerDisplayName": "VOIP Caller",
+    "incomingCallContext": "H4sIAAAAAAAEAMVX+2/bOBL+VwQfcD9cS4sUJUrkwjg4jn3NNa/m0WuL4AKKomw2sqSV6Ee62//9hpbzsnOH4naBKrAicjjffD0iODO/9ZQsitPKmtwoaU1V9sRvvbyp5u6/yXqilwipWiElylgapk",
+    "correlationId": "correlationId"
+  },
+  "eventType": "Microsoft.Communication.IncomingCall",
+  "dataVersion": "1.0",
+  "metadataVersion": "1",
+  "eventTime": "2022-12-30T21:13:45Z"
+}
diff --git a/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/examples/event-grid-schema/incoming_call.json b/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/examples/event-grid-schema/incoming_call.json
new file mode 100644
index 000000000000..f6023af310c0
--- /dev/null
+++ b/specification/eventgrid/data-plane/Microsoft.Communication/stable/2018-01-01/examples/event-grid-schema/incoming_call.json
@@ -0,0 +1,26 @@
+{
+  "id": "81fa5460-7d8c-4fb7-bbb7-2d56154e78d9",
+  "topic": "/subscriptions/{subscription-id}/resourceGroups/{group-name}/providers/Microsoft.Communication/communicationServices/{communication-services-resource-name}",
+  "subject": "/call/{call-id}",
+  "data": {
+    "to": {
+      "rawId": "8:acs:5354158b-17b7-489c-9380-95d8821ff76b_0000000c-6c47-7dfd-6d70-224822000cfb",
+      "communicationUser": {
+        "id": "8:acs:5354158b-17b7-489c-9380-95d8821ff76b_0000000c-6c47-7dfd-6d70-224822000cfb"
+      }
+    },
+    "from": {
+      "rawId": "8:acs:0a420b29-555c-4f6b-841e-de8059893bb9_0000000c-6c47-7dfd-6d70-224822000cfb",
+      "communicationUser": {
+        "id": "8:acs:0a420b29-555c-4f6b-841e-de8059893bb9_0000000c-6c47-7dfd-6d70-224822000cfb"
+      }
+    },
+    "callerDisplayName": "VOIP Caller",
+    "incomingCallContext": "H4sIAAAAAAAEAMVX+2/bOBL+VwQfcD9cS4sUJUrkwjg4jn3NNa/m0WuL4AKKomw2sqSV6Ee62//9hpbzsnOH4naBKrAicjjffD0iODO/9ZQsitPKmtwoaU1V9sRvvbyp5u6/yXqilwipWiElylgapk",
+    "correlationId": "correlationId"
+  },
+  "eventType": "Microsoft.Communication.IncomingCall",
+  "dataVersion": "1.0",
+  "metadataVersion": "1",
+  "eventTime": "2022-12-30T21:13:45Z"
+}