diff --git a/packages/grpc-js/package.json b/packages/grpc-js/package.json
index 6f5b1f3a..aa2d6bfd 100644
--- a/packages/grpc-js/package.json
+++ b/packages/grpc-js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@grpc/grpc-js",
-  "version": "0.7.2",
+  "version": "0.7.3",
   "description": "gRPC Library for Node - pure JS implementation",
   "homepage": "https://grpc.io/",
   "repository": "https://github.com/grpc/grpc-node/tree/master/packages/grpc-js",
diff --git a/packages/grpc-js/src/channel.ts b/packages/grpc-js/src/channel.ts
index ad45f654..cdbc81a2 100644
--- a/packages/grpc-js/src/channel.ts
+++ b/packages/grpc-js/src/channel.ts
@@ -110,9 +110,9 @@ export interface Channel {
    */
   createCall(
     method: string,
-    deadline: Deadline | null | undefined,
+    deadline: Deadline,
     host: string | null | undefined,
-    parentCall: Call | null | undefined,
+    parentCall: any,
     propagateFlags: number | null | undefined
   ): Call;
 }
@@ -140,6 +140,15 @@ export class ChannelImplementation implements Channel {
     private readonly credentials: ChannelCredentials,
     private readonly options: ChannelOptions
   ) {
+    if (typeof target !== 'string') {
+      throw new TypeError('Channel target must be a string');
+    }
+    if (!(credentials instanceof ChannelCredentials)) {
+      throw new TypeError('Channel credentials must be a ChannelCredentials object');
+    }
+    if ((typeof options !== 'object') || !Object.values(options).every(value => typeof value === 'string' || typeof value === 'number')) {
+      throw new TypeError('Channel options must be an object with string or number values');
+    }
     /* The global boolean parameter to getSubchannelPool has the inverse meaning to what
      * the grpc.use_local_subchannel_pool channel option means. */
     this.subchannelPool = getSubchannelPool(
@@ -430,11 +439,17 @@ export class ChannelImplementation implements Channel {
 
   createCall(
     method: string,
-    deadline: Deadline | null | undefined,
+    deadline: Deadline,
     host: string | null | undefined,
-    parentCall: Call | null | undefined,
+    parentCall: any,
     propagateFlags: number | null | undefined
   ): Call {
+    if (typeof method !== 'string') {
+      throw new TypeError('Channel#createCall: method must be a string');
+    }
+    if (!(typeof deadline === 'number' || deadline instanceof Date)) {
+      throw new TypeError('Channel#createCall: deadline must be a number or Date');
+    }
     if (this.connectivityState === ConnectivityState.SHUTDOWN) {
       throw new Error('Channel has been shut down');
     }
@@ -451,8 +466,7 @@ export class ChannelImplementation implements Channel {
         deadline
     );
     const finalOptions: CallStreamOptions = {
-      deadline:
-        deadline === null || deadline === undefined ? Infinity : deadline,
+      deadline: deadline,
       flags: propagateFlags || 0,
       host: host || this.defaultAuthority,
       parentCall: parentCall || null,
diff --git a/packages/grpc-js/src/client.ts b/packages/grpc-js/src/client.ts
index 77a5571f..54679034 100644
--- a/packages/grpc-js/src/client.ts
+++ b/packages/grpc-js/src/client.ts
@@ -48,6 +48,7 @@ import {
   InterceptorArguments,
   InterceptingCallInterface,
 } from './client-interceptors';
+import { ServerUnaryCall, ServerReadableStream, ServerWritableStream, ServerDuplexStream } from './server-call';
 
 const CHANNEL_SYMBOL = Symbol();
 const INTERCEPTOR_SYMBOL = Symbol();
@@ -61,8 +62,7 @@ export interface UnaryCallback<ResponseType> {
 export interface CallOptions {
   deadline?: Deadline;
   host?: string;
-  /* There should be a parent option here that will accept a server call,
-   * but the server is not yet implemented so it makes no sense to have it */
+  parent?: ServerUnaryCall<any, any> | ServerReadableStream<any, any> | ServerWritableStream<any, any> | ServerDuplexStream<any, any>
   propagate_flags?: number;
   credentials?: CallCredentials;
   interceptors?: Interceptor[];
diff --git a/packages/grpc-js/src/index.ts b/packages/grpc-js/src/index.ts
index a80b08b9..941174c0 100644
--- a/packages/grpc-js/src/index.ts
+++ b/packages/grpc-js/src/index.ts
@@ -28,7 +28,7 @@ import { CallCredentials } from './call-credentials';
 import { Deadline, StatusObject } from './call-stream';
 import { Channel, ConnectivityState, ChannelImplementation } from './channel';
 import { ChannelCredentials } from './channel-credentials';
-import { CallOptions, Client } from './client';
+import { CallOptions, Client, CallInvocationTransformer, CallProperties } from './client';
 import { LogVerbosity, Status } from './constants';
 import * as logging from './logging';
 import {
@@ -199,7 +199,10 @@ export {
   loadPackageDefinition,
   makeClientConstructor,
   makeClientConstructor as makeGenericClientConstructor,
+  CallProperties,
+  CallInvocationTransformer,
   ChannelImplementation as Channel,
+  Channel as ChannelInterface
 };
 
 /**