diff --git a/src/Client.ts b/src/Client.ts
index 47822a1..b64505c 100644
--- a/src/Client.ts
+++ b/src/Client.ts
@@ -1,26 +1,33 @@
 import EventEmitter from "events";
-import ClientStatus from "./clientStatus";
-import {Job} from "./job";
-import Logger from "./logger";
+import ClientStatus from "./ClientStatus";
+import {Job} from "./Job";
+import Logger from "./Logger";
 import PersistentPromise from "./PersistentPromise";
-import {SmppSession} from "./smppSession";
+import {SmppSession} from "./SmppSession";
 
+const NanoTimer = require('nanotimer');
 const smpp = require("smpp");
 
 const AUTO_ENQUIRE_LINK_PERIOD: number = Number(process.env.AUTO_ENQUIRE_LINK_PERIOD) || 500;
+const MESSAGE_SEND_UPDATE_DELAY: number = Number(process.env.MESSAGE_SEND_UPDATE_DELAY) || 500;
 
 export class Client implements SmppSession {
 	public static ClientEvents = {
-		STATUS_CHANGED: "STATUS_CHANGED", STATE_CHANGED: "STATE_CHANGED", ANY_PDU: "ANY_PDU",
+		STATUS_CHANGED: "STATUS_CHANGED",
+		STATE_CHANGED: "STATE_CHANGED",
+		ANY_PDU: "ANY_PDU",
+		MESSAGE_SEND_COUNTER_UPDATE_EVENT: "MESSAGE_SEND_COUNTER_UPDATE_EVENT"
 	}
-	defaultSingleJob?: Job;
-	defaultMultipleJob?: Job;
+	defaultSingleJob: Job = Job.createEmptySingle();
+	defaultMultipleJob: Job = Job.createEmptyMultiple();
 	private readonly eventEmitter: EventEmitter;
 	private readonly logger: Logger;
 	private readonly id: number;
 	private session?: any;
 	private connectPromise: PersistentPromise | null = null;
 	private bindPromise: PersistentPromise | null = null;
+	private sendTimer: any | null = null;
+	private counterUpdateTimer: any | null = null;
 
 	constructor(id: number, url: string, username: string, password: string) {
 		this.id = id;
@@ -105,6 +112,7 @@ export class Client implements SmppSession {
 			this.session.bind_transceiver({
 				system_id: this._username, password: this._password,
 			}, this.eventBindReply.bind(this));
+			this.setStatus(ClientStatus.BINDING);
 		});
 		return this.bindPromise;
 	}
@@ -116,23 +124,81 @@ export class Client implements SmppSession {
 	}
 
 	serialize(): string {
-		throw new Error("Method not implemented.");
+		return JSON.stringify({
+			id: this.id, url: this._url, username: this._username, password: this._password, status: this._status,
+			defaultSingleJob: this.defaultSingleJob, defaultMultipleJob: this.defaultMultipleJob,
+		});
 	}
 
 	close(): Promise<void> {
-		throw new Error("Method not implemented.");
+		return new Promise((resolve, reject) => {
+			this.session.close();
+			resolve();
+		});
 	}
 
-	sendPdu(pdu: object): Promise<object> {
-		throw new Error("Method not implemented.");
+	sendPdu(pdu: object, force?: boolean): Promise<object> {
+		return new Promise((resolve, reject) => {
+			if (!force) {
+				this.validateSession(reject);
+				this.validateBound(reject);
+			}
+			this.logger.log5(`Client-${this.id} sending PDU: ${JSON.stringify(pdu)}`);
+			this.session.send(pdu);
+			resolve(pdu);
+		});
 	}
 
-	sendMultiple(Job: object): Promise<object> {
-		throw new Error("Method not implemented.");
+	sendMultiple(job: Job): Promise<void> {
+		return new Promise((resolve, reject) => {
+			this.validateSession(reject);
+			this.validateBound(reject);
+			if (!job.count || !job.perSecond) {
+				reject(`Client-${this.id} sendMultiple failed: invalid job, missing fields`);
+			}
+			this.logger.log1(`Client-${this.id} sending multiple messages: ${JSON.stringify(job)}`);
+
+			this.setStatus(ClientStatus.BUSY);
+
+			let counter = 0;
+			let previousUpdateCounter = 0;
+
+			this.counterUpdateTimer = new NanoTimer();
+			this.counterUpdateTimer.setInterval(() => {
+				if (previousUpdateCounter !== counter) {
+					this.eventEmitter.emit(Client.ClientEvents.MESSAGE_SEND_COUNTER_UPDATE_EVENT, counter);
+					previousUpdateCounter = counter;
+				}
+			}, '', `${MESSAGE_SEND_UPDATE_DELAY / 1000} s`);
+
+			let count = job.count || 1;
+			let interval = 1 / (job.perSecond || 1);
+			this.sendTimer = new NanoTimer();
+			this.sendTimer.setInterval(() => {
+				if (count > 0 && counter >= count) {
+					this.cancelSendInterval();
+				} else {
+					this.sendPdu(job.pdu, true)
+						.catch(e => this.logger.log1(`Error sending message: ${e}`));
+					counter++;
+				}
+			}, '', `${interval} s`);
+			resolve();
+		});
 	}
 
-	sendSingle(Job: object): Promise<object> {
-		throw new Error("Method not implemented.");
+	sendSingle(job: Job): Promise<object> {
+		return this.sendPdu(job.pdu);
+	}
+
+	cancelSendInterval(): void {
+		if (this.sendTimer) {
+			this.sendTimer.clearInterval();
+			this.counterUpdateTimer.clearInterval();
+			this.sendTimer = null;
+			this.counterUpdateTimer = null;
+		}
+		this.setStatus(ClientStatus.BOUND);
 	}
 
 	private connectSession(): void {
@@ -214,4 +280,20 @@ export class Client implements SmppSession {
 		}
 		return true;
 	}
+
+	private validateSession(reject: (reason?: any) => void) {
+		if (!this.session) {
+			let errorMessage = `Client-${this.id} session is not defined`;
+			this.logger.log1(errorMessage);
+			reject(errorMessage);
+		}
+	}
+
+	private validateBound(reject: (reason?: any) => void) {
+		if (this._status !== ClientStatus.BOUND) {
+			let errorMessage = `Client-${this.id} is not bound`;
+			this.logger.log1(errorMessage);
+			reject(errorMessage);
+		}
+	}
 }
\ No newline at end of file
diff --git a/src/Job.ts b/src/Job.ts
index 93eb79f..ba1737b 100644
--- a/src/Job.ts
+++ b/src/Job.ts
@@ -1,9 +1,11 @@
+const smpp = require("smpp");
+
 export class Job {
-    pdu: object;
+    pdu: any;
     perSecond?: number;
     count?: number;
 
-    constructor(pdu: object, perSecond?: number, count?: number) {
+    constructor(pdu: any, perSecond?: number, count?: number) {
         this.pdu = pdu;
         this.perSecond = perSecond;
         this.count = count;
@@ -12,4 +14,12 @@ export class Job {
     serialize(): string {
         return JSON.stringify(this);
     }
+
+    static createEmptySingle(): Job {
+        return new Job({});
+    }
+
+    static createEmptyMultiple(): Job {
+        return new Job({}, 1, 1);
+    }
 }
\ No newline at end of file
diff --git a/src/SmppSession.ts b/src/SmppSession.ts
index 646e564..b7cc9be 100644
--- a/src/SmppSession.ts
+++ b/src/SmppSession.ts
@@ -1,16 +1,20 @@
+import {Job} from "./Job";
+
 export interface SmppSession {
-    username: string,
-    password: string,
+	username: string,
+	password: string,
 
-    sendPdu(pdu: object): Promise<object>;
+	sendPdu(pdu: object): Promise<object>;
 
-    sendSingle(Job: object): Promise<object>;
+	sendSingle(job: Job): Promise<object>;
 
-    sendMultiple(Job: object): Promise<object>;
+	sendMultiple(job: Job): Promise<void>;
 
-    close(): Promise<void>;
+	cancelSendInterval(): void;
 
-    initialize(): void;
+	close(): Promise<void>;
 
-    serialize(): string;
+	initialize(): void;
+
+	serialize(): string;
 }
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index fb432f6..13508e1 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,4 +1,6 @@
-import Logger from "./logger";
+import {Client} from "./Client";
+import {Job} from "./Job";
+import Logger from "./Logger";
 
 const smpp = require("smpp");
 const fs = require("fs");
@@ -17,18 +19,20 @@ const SERVER_PORT: number = Number(process.env.SERVER_PORT) || 8190;
 const WS_SERVER_PORT: number = Number(process.env.WS_SERVER_PORT) || 8191;
 const CLIENT_SESSIONS_FILE: string = process.env.CLIENT_SESSIONS_FILE || "client_sessions.json";
 const CENTER_SESSIONS_FILE: string = process.env.CENTER_SESSIONS_FILE || "center_sessions.json";
-const MESSAGE_SEND_UPDATE_DELAY: number = Number(process.env.MESSAGE_SEND_UPDATE_DELAY) || 500;
 
 // TODO: Add support for encodings
 // TODO: Implement some sort of metrics on frontend by counting the pdus
 
 let logger = new Logger("main");
 
-import {Client} from "./client";
-
 let client: Client = new Client(0, "smpp://localhost:7000", "test", "test");
 client.connectAndBind().then(() => {
-    console.log("POGGIES");
+	console.log("POGGIES");
+	client.sendMultiple(new Job(new smpp.PDU('submit_sm', {
+		source_addr: "1234567890",
+		destination_addr: "1234567890",
+		short_message: "Hello World"
+	}), 100, 100))
 });
 
 // class ClientSession {