diff --git a/core/generator/gapic-generator-typescript/templates/cjs/typescript_gapic/src/$version/$service_client.ts.njk b/core/generator/gapic-generator-typescript/templates/cjs/typescript_gapic/src/$version/$service_client.ts.njk
index 90553e89770f..182dae751d01 100644
--- a/core/generator/gapic-generator-typescript/templates/cjs/typescript_gapic/src/$version/$service_client.ts.njk
+++ b/core/generator/gapic-generator-typescript/templates/cjs/typescript_gapic/src/$version/$service_client.ts.njk
@@ -398,6 +398,23 @@ export class {{ service.name }}Client {
        , 'x-goog-api-version': '{{ service.apiVersion }}'
 {%- endif -%}});
 
+    {%- if api.enableTelemetryTracing %}
+      if (opts.enableTelemetryTracing) {
+        // set the internal telemetry info using `otherArgs` attribute of `CallSettings`
+        const internalTelemetryInfo = {
+          gcpClientService: '{{ api.loggingName }}',
+          gcpVersion: '{{ api.naming.version }}',
+          gcpRepo: 'googleapis/google-cloud-node',
+          gcpArtifact: '{{ api.publishName }}',
+        };
+        for (const methodName of Object.keys(this._defaults)) {
+          this._defaults[methodName].enableTelemetryTracing = opts.enableTelemetryTracing;
+          this._defaults[methodName].otherArgs = this._defaults[methodName].otherArgs || {};
+          this._defaults[methodName].otherArgs.internalTelemetryInfo = internalTelemetryInfo;
+        }
+      }
+    {%- endif %}
+
     // Set up a dictionary of "inner API calls"; the core implementation
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
diff --git a/core/generator/gapic-generator-typescript/templates/esm/typescript_gapic/esm/src/$version/$service_client.ts.njk b/core/generator/gapic-generator-typescript/templates/esm/typescript_gapic/esm/src/$version/$service_client.ts.njk
index e505db0eef11..fc0ca68f067d 100644
--- a/core/generator/gapic-generator-typescript/templates/esm/typescript_gapic/esm/src/$version/$service_client.ts.njk
+++ b/core/generator/gapic-generator-typescript/templates/esm/typescript_gapic/esm/src/$version/$service_client.ts.njk
@@ -409,6 +409,23 @@ export class {{ service.name }}Client {
        , 'x-goog-api-version': '{{ service.apiVersion }}'
 {%- endif %}});
 
+    {%- if api.enableTelemetryTracing %}
+      if (opts.enableTelemetryTracing) {
+        // set the internal telemetry info using `otherArgs` attribute of `CallSettings`
+        const internalTelemetryInfo = {
+          gcpClientService: '{{ api.loggingName }}',
+          gcpVersion: '{{ api.naming.version }}',
+          gcpRepo: 'googleapis/google-cloud-node',
+          gcpArtifact: '{{ api.publishName }}',
+        };
+        for (const methodName of Object.keys(this._defaults)) {
+          this._defaults[methodName].enableTelemetryTracing = opts.enableTelemetryTracing;
+          this._defaults[methodName].otherArgs = this._defaults[methodName].otherArgs || {};
+          this._defaults[methodName].otherArgs.internalTelemetryInfo = internalTelemetryInfo;
+        }
+      }
+    {%- endif %}
+
     // Set up a dictionary of "inner API calls"; the core implementation
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
diff --git a/core/generator/gapic-generator-typescript/typescript/test/unit/generator.ts b/core/generator/gapic-generator-typescript/typescript/test/unit/generator.ts
index 5ec3b3e1b8a1..4500b7be6ed4 100644
--- a/core/generator/gapic-generator-typescript/typescript/test/unit/generator.ts
+++ b/core/generator/gapic-generator-typescript/typescript/test/unit/generator.ts
@@ -300,10 +300,10 @@ apis:
           {name: 'google/cloud/test/v1/test.proto'},
           {name: 'google/cloud/test/v1/other.proto'},
         ],
-      } as unknown as protos.google.protobuf.compiler.CodeGeneratorRequest;
+      } as protos.google.protobuf.compiler.CodeGeneratorRequest;
       generator.response = {
         file: [],
-      } as unknown as protos.google.protobuf.compiler.CodeGeneratorResponse;
+      } as protos.google.protobuf.compiler.CodeGeneratorResponse;
 
       getTestGenerator(generator).addProtosToResponse();
 
@@ -367,6 +367,208 @@ apis:
         await generator.processTemplates(api);
       }, /Template directory .* does not exist\./);
     });
+
+    it('should generate telemetry tracing configuration in service client when enableTelemetryTracing is true (CJS)', async () => {
+      generator.request = {
+        protoFile: [
+          {
+            name: 'google/cloud/test/v1/test.proto',
+            package: 'google.cloud.test.v1',
+            messageType: [{name: 'TestRequest'}, {name: 'TestResponse'}],
+            service: [
+              {
+                name: 'TestService',
+                options: {
+                  '.google.api.defaultHost': 'test.googleapis.com',
+                },
+                method: [
+                  {
+                    name: 'TestMethod',
+                    inputType: '.google.cloud.test.v1.TestRequest',
+                    outputType: '.google.cloud.test.v1.TestResponse',
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+        fileToGenerate: ['google/cloud/test/v1/test.proto'],
+      } as protos.google.protobuf.compiler.CodeGeneratorRequest;
+      generator.templates = ['typescript_gapic'];
+      generator.enableTelemetryTracing = true;
+      generator.publishName = '@google-cloud/test';
+      generator.response = {
+        file: [],
+      } as protos.google.protobuf.compiler.CodeGeneratorResponse;
+
+      const api = getTestGenerator(generator).buildAPIObject();
+      await generator.processTemplates(api);
+
+      const clientFile = generator.response.file.find(f =>
+        f.name?.includes('test_service_client.ts'),
+      );
+      assert.ok(clientFile);
+      assert.ok(
+        clientFile.content?.includes('if (opts.enableTelemetryTracing) {'),
+      );
+      assert.ok(clientFile.content?.includes('internalTelemetryInfo'));
+      assert.ok(clientFile.content?.includes("gcpClientService: 'test',"));
+      assert.ok(clientFile.content?.includes("gcpVersion: 'v1',"));
+      assert.ok(
+        clientFile.content?.includes(
+          "gcpRepo: 'googleapis/google-cloud-node',",
+        ),
+      );
+      assert.ok(
+        clientFile.content?.includes("gcpArtifact: '@google-cloud/test',"),
+      );
+      assert.ok(
+        clientFile.content?.includes(
+          'this._defaults[methodName].enableTelemetryTracing =',
+        ),
+      );
+      assert.ok(clientFile.content?.includes('opts.enableTelemetryTracing;'));
+      assert.ok(
+        clientFile.content?.includes('this._defaults[methodName].otherArgs ='),
+      );
+      assert.ok(
+        clientFile.content?.includes(
+          'this._defaults[methodName].otherArgs || {};',
+        ),
+      );
+      assert.ok(
+        clientFile.content?.includes(
+          'this._defaults[methodName].otherArgs.internalTelemetryInfo =',
+        ),
+      );
+      assert.ok(clientFile.content?.includes('internalTelemetryInfo;'));
+    });
+
+    it('should generate telemetry tracing configuration in service client when enableTelemetryTracing is true (ESM)', async () => {
+      generator.request = {
+        protoFile: [
+          {
+            name: 'google/cloud/test/v1/test.proto',
+            package: 'google.cloud.test.v1',
+            messageType: [{name: 'TestRequest'}, {name: 'TestResponse'}],
+            service: [
+              {
+                name: 'TestService',
+                options: {
+                  '.google.api.defaultHost': 'test.googleapis.com',
+                },
+                method: [
+                  {
+                    name: 'TestMethod',
+                    inputType: '.google.cloud.test.v1.TestRequest',
+                    outputType: '.google.cloud.test.v1.TestResponse',
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+        fileToGenerate: ['google/cloud/test/v1/test.proto'],
+      } as protos.google.protobuf.compiler.CodeGeneratorRequest;
+      generator.templates = ['typescript_gapic'];
+      generator.format = ['esm'];
+      generator.enableTelemetryTracing = true;
+      generator.publishName = '@google-cloud/test';
+      generator.response = {
+        file: [],
+      } as protos.google.protobuf.compiler.CodeGeneratorResponse;
+
+      const api = getTestGenerator(generator).buildAPIObject();
+      await generator.processTemplates(api);
+
+      const clientFile = generator.response.file.find(f =>
+        f.name?.includes('test_service_client.ts'),
+      );
+      assert.ok(clientFile);
+      assert.ok(
+        clientFile.content?.includes('if (opts.enableTelemetryTracing) {'),
+      );
+      assert.ok(clientFile.content?.includes('internalTelemetryInfo'));
+      assert.ok(clientFile.content?.includes("gcpClientService: 'test',"));
+      assert.ok(clientFile.content?.includes("gcpVersion: 'v1',"));
+      assert.ok(
+        clientFile.content?.includes(
+          "gcpRepo: 'googleapis/google-cloud-node',",
+        ),
+      );
+      assert.ok(
+        clientFile.content?.includes("gcpArtifact: '@google-cloud/test',"),
+      );
+      assert.ok(
+        clientFile.content?.includes(
+          'this._defaults[methodName].enableTelemetryTracing =',
+        ),
+      );
+      assert.ok(clientFile.content?.includes('opts.enableTelemetryTracing;'));
+      assert.ok(
+        clientFile.content?.includes('this._defaults[methodName].otherArgs ='),
+      );
+      assert.ok(
+        clientFile.content?.includes(
+          'this._defaults[methodName].otherArgs || {};',
+        ),
+      );
+      assert.ok(
+        clientFile.content?.includes(
+          'this._defaults[methodName].otherArgs.internalTelemetryInfo =',
+        ),
+      );
+      assert.ok(clientFile.content?.includes('internalTelemetryInfo;'));
+    });
+
+    it('should not generate telemetry tracing configuration when enableTelemetryTracing is false', async () => {
+      generator.request = {
+        protoFile: [
+          {
+            name: 'google/cloud/test/v1/test.proto',
+            package: 'google.cloud.test.v1',
+            messageType: [{name: 'TestRequest'}, {name: 'TestResponse'}],
+            service: [
+              {
+                name: 'TestService',
+                options: {
+                  '.google.api.defaultHost': 'test.googleapis.com',
+                },
+                method: [
+                  {
+                    name: 'TestMethod',
+                    inputType: '.google.cloud.test.v1.TestRequest',
+                    outputType: '.google.cloud.test.v1.TestResponse',
+                  },
+                ],
+              },
+            ],
+          },
+        ],
+        fileToGenerate: ['google/cloud/test/v1/test.proto'],
+      } as protos.google.protobuf.compiler.CodeGeneratorRequest;
+      generator.templates = ['typescript_gapic'];
+      generator.enableTelemetryTracing = false;
+      generator.response = {
+        file: [],
+      } as protos.google.protobuf.compiler.CodeGeneratorResponse;
+
+      const api = getTestGenerator(generator).buildAPIObject();
+      await generator.processTemplates(api);
+
+      const clientFile = generator.response.file.find(f =>
+        f.name?.includes('test_service_client.ts'),
+      );
+      assert.ok(clientFile);
+      assert.strictEqual(
+        clientFile.content?.includes('if (opts.enableTelemetryTracing) {'),
+        false,
+      );
+      assert.strictEqual(
+        clientFile.content?.includes('internalTelemetryInfo'),
+        false,
+      );
+    });
   });
 
   describe('generate', () => {
@@ -382,7 +584,7 @@ apis:
       try {
         generator.request = {
           protoFile: [],
-        } as unknown as protos.google.protobuf.compiler.CodeGeneratorRequest;
+        } as protos.google.protobuf.compiler.CodeGeneratorRequest;
 
         await generator.generate();