diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 31d90ae..ab9fcb8 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -27,6 +27,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version-file: package.json
+          cache: npm
 
       - name: Install dependencies
         run: npm ci
@@ -37,5 +38,16 @@ jobs:
       - name: Lint
         run: npm run lint
 
-      - name: Test
+      - name: Unit tests
         run: npm run test:run
+
+      - name: Integration tests
+        run: |
+          node dist/index.js --lineupId=USA-DITV751-X --timespan=3 --postalCode=80020 --outputFile=dtv.xml
+          node dist/index.js --lineupId=USA-OTA80020 --timespan=3 --postalCode=80020 --outputFile=ota.xml
+
+          # Error if they are the same
+          if cmp -s dtv.xml ota.xml; then
+            echo "DTV and OTA outputs are the same, which is unexpected."
+            exit 1
+          fi
diff --git a/src/config.ts b/src/config.ts
index af855b9..1186968 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,38 +1,64 @@
 import { UserAgent } from "./useragents.js";
 
-export const config = {
-  baseUrl: "https://tvlistings.gracenote.com/api/grid",
-  lineupId:
+function processLineupId(): string {
+  const lineupId =
     process.env["LINEUP_ID"] ||
     process.argv.find((arg) => arg.startsWith("--lineupId="))?.split("=")[1] ||
-    "USA-lineupId-DEFAULT",
-  timespan:
-    process.env["TIMESPAN"] ||
-    process.argv.find((arg) => arg.startsWith("--timespan="))?.split("=")[1] ||
-    "6",
-  country:
-    process.env["COUNTRY"] ||
-    process.argv.find((arg) => arg.startsWith("--country="))?.split("=")[1] ||
-    "USA",
-  postalCode:
-    process.env["POSTAL_CODE"] ||
-    process.argv
-      .find((arg) => arg.startsWith("--postalCode="))
-      ?.split("=")[1] ||
-    "30309",
-  pref:
-    process.env["PREF"] ||
-    process.argv.find((arg) => arg.startsWith("--pref="))?.split("=")[1] ||
-    "",
-  timezone: process.env.TZ || "America/New_York",
-  userAgent:
-    process.env["USER_AGENT"] ||
-    process.argv.find((arg) => arg.startsWith("--userAgent="))?.split("=")[1] ||
-    UserAgent,
-  outputFile:
-    process.env["OUTPUT_FILE"] ||
-    process.argv
-      .find((arg) => arg.startsWith("--outputFile="))
-      ?.split("=")[1] ||
-    "xmltv.xml",
-};
+    "USA-lineupId-DEFAULT";
+
+  if (lineupId.includes("OTA")) {
+    return "USA-lineupId-DEFAULT";
+  }
+
+  return lineupId;
+}
+
+function getHeadendId(lineupId: string): string {
+  const match = lineupId.match(/^(USA|CAN)-(.*?)(?:-[A-Z]+)?$/);
+
+  return match?.[2] || "lineup";
+}
+
+export function getConfig() {
+  const lineupId = processLineupId();
+  const headendId = getHeadendId(lineupId);
+
+  return {
+    baseUrl: "https://tvlistings.gracenote.com/api/grid",
+    lineupId,
+    headendId,
+    timespan:
+      process.env["TIMESPAN"] ||
+      process.argv
+        .find((arg) => arg.startsWith("--timespan="))
+        ?.split("=")[1] ||
+      "6",
+    country:
+      process.env["COUNTRY"] ||
+      process.argv.find((arg) => arg.startsWith("--country="))?.split("=")[1] ||
+      "USA",
+    postalCode:
+      process.env["POSTAL_CODE"] ||
+      process.argv
+        .find((arg) => arg.startsWith("--postalCode="))
+        ?.split("=")[1] ||
+      "30309",
+    pref:
+      process.env["PREF"] ||
+      process.argv.find((arg) => arg.startsWith("--pref="))?.split("=")[1] ||
+      "",
+    timezone: process.env.TZ || "America/New_York",
+    userAgent:
+      process.env["USER_AGENT"] ||
+      process.argv
+        .find((arg) => arg.startsWith("--userAgent="))
+        ?.split("=")[1] ||
+      UserAgent,
+    outputFile:
+      process.env["OUTPUT_FILE"] ||
+      process.argv
+        .find((arg) => arg.startsWith("--outputFile="))
+        ?.split("=")[1] ||
+      "xmltv.xml",
+  };
+}
diff --git a/src/index.ts b/src/index.ts
index 7ec504a..95daec5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,7 +1,9 @@
 import { writeFileSync } from "node:fs";
 import { getTVListings } from "./tvlistings.js";
 import { buildXmltv } from "./xmltv.js";
-import { config } from "./config.js";
+import { getConfig } from "./config.js";
+
+const config = getConfig();
 
 function isHelp() {
   if (process.argv.includes("--help")) {
diff --git a/src/tvlistings.ts b/src/tvlistings.ts
index 2841313..6a353ce 100644
--- a/src/tvlistings.ts
+++ b/src/tvlistings.ts
@@ -1,4 +1,6 @@
-import { config } from "./config.js";
+import { getConfig } from "./config.js";
+
+const config = getConfig();
 
 export interface Program {
   /** "title": "GMA3" */
@@ -82,7 +84,7 @@ function buildUrl(time: number, timespan: number): string {
   const params = {
     lineupId: config.lineupId,
     timespan: timespan.toString(),
-    headendId: "lineupId",
+    headendId: config.headendId,
     country: config.country,
     timezone: config.timezone,
     postalCode: config.postalCode,
@@ -91,6 +93,8 @@ function buildUrl(time: number, timespan: number): string {
     aid: "orbebb",
     languagecode: "en-us",
     time: time.toString(),
+    device: "X",
+    userId: "-",
   };
 
   const urlParams = new URLSearchParams(params).toString();
@@ -119,7 +123,7 @@ export async function getTVListings(): Promise<GridApiResponse> {
     }).then(async (response) => {
       if (!response.ok) {
         throw new Error(
-          `Failed to fetch: ${response.status} ${response.statusText}`
+          `Failed to fetch: ${response.status} ${response.statusText}`,
         );
       }
       const chunkData = (await response.json()) as GridApiResponse;